Just as the title suggest, I would like to share my experience of going multiplatform with my novel. And there is some stuff to share. This is mostly for newer authors, or those who would like to start writing. Now, I will compare two different sites, and tell you pros and cons of each. Mind you, this was MY experience, and therefore it might be different to others. But anyway, let's start this long post.
Webnovel VS Royal Road
Some people might claim that Royal Road is bigger, it's not. Webnovel is a bigger platform, therefore you have much bigger chances of gaining more readers here. When it comes to userbase on both sites, I have mixed feelings. I've been on Webnovel for I think over two years, but a registered user for almost two years. This site is rather welcoming, and although you might get a few trolls or angry people here and there, I found the experience to be rather pleasing.
Royal Road on the other hand, not so much. I only published there recently (I no longer publish there as well), but with an edited novel to a much better standard, I didn't expect such hate. There will be people who don't like your novel of course, but what I experienced back at Royal Road, isn't simple not liking something, it felt to me like a targeted attacks.
Reviews
Which points me to the review and ranking system. A lot of people complain that webnovel's ranking system is rubbish. Royal Road is not different, if not worse. On webnovel, you can see who gave you a review, their accounts are linked to them, and you can even ask that person for more reasons or communicate. On Royal Road, not so much. On Royal Road people are able to give you ratings, but you don't see who gave you those ratings. For all I know, one guy could give five 0.5 star ratings (Yes they can give half star ratings there), and I would never know who. You can't contact them, because you have no way of knowing who gave you what.
On both websites, ratings are tied with your rank. On Webnovel, you at least see who gave you what ratings and they are required to write at least 140 characters. But, Wenovel has a voting system implemented as well. People use their stones in order to vote. Royal Road doesn't have that, and your ranking is tied to your ratings and reviews.
In a way, this is good and bad. When you have a voting system in place, the more people vote (Even if your reviews are lacking) you can get a good ranking. On the Royal Road though, you can't simply get a good ranking. Because your rank is tied to reviews and ratings alone, readers can actually threaten you with 1 or half star ratings. This is not nice to experience.
Another difference between those two sites, is the ability to delete content. On Webnovel, you can remove reviews. It is a controversial topic, but thanks to that, authors cannot be threatened with 1 star reviews. This alone is a big plus. Of course people can abuse this power, and people do. But as long as this is used to remove harassment, I don't have a problem with that.
You can't delete comments though. Webnovel doesn't allow that, and the comments are there to stay. You can report them, or sometimes people will delete those comments themselves, but as an author you don't have the power to delete them. This is not the case at Royal Road. You can remove comments, but you can't remove ratings (as you don't even know who posted them), nor can you remove reviews. You can PM the reviewer, report it, but nothing else really.
Webnovel doesn't have a "full" rating system for reviews either. You can only like the review, not dislike it. At Royal Road, you can do both.
Userbase
Yea, both sites have bias towards something. Although that is true, Webnovel in my experience is more accommodating. Webnovel is biased towards Romance, System, Reincarnation and similar tags. Those novels generate the most views. If your novel is not in that category, you might have to struggle for a while, before gaining some views. This is no different at Royal Road. The site is biased towards RPG, game elements and such. People have bias over there, and rate accordingly.
From my experience, novels with many, many more mistakes than mine, had better scores just because they were litrpg (Another reason I don't publish there anymore). You can't escape bias, if you write a novel that doesn't contain those tags. Webnovel though, although people can be biased, but not to such degree. They would usually rate your novel for what it was. It might not be interesting to them, but they will not leave a 1 star review just because of that. They are required to rate stability, quality and so on. Royal Road, only overall rating can be posted, without substance.
Before I get comments replying "people post hate reviews at webnovel". Remember that those can be deleted here. Royal Road, you are stuck with them forever.
Quality
Webnovel is much, much more forgiving for quality, especially if you write something outside of popular tags. Royal Road is that lofty mate of yours, who will point out anything, just to make you look miserable. I had people nit pick at the smallest details, and so leaving angry reviews because "I want to know what happens next". (Mind you, they received like 8 chapters in a week, not 1ch in a week).
Not everyone is born with English as their first language. Shit, even those people make mistakes. Therefore I would recommend Webnovel for the beginners, based on that alone. As a beginner, your writing will not be perfect from the get go. Writing is a skill to be learned. Even if your first language is English, you might've an easier time starting up, but time will prove that you can improve.
Author Support
I saw people complain about inkstone here, you should have a look at Royal Road. Yea, you can edit your text there, but boy the website is so outdated. You write your novel in something like forum posts. Looks rubbish in my opinion, and you have a small window in which you write your text. At Webnovel, you have a full sized page, where you can write a title and content below. Looks clean, but you can't really edit the text in any way (At least not now).
Then there is the spell check. Webnovel believe it or not, has a basic spelling checker implemented. The site will highlight mistakes (not everything) and that is something. Royal Road has none of that. Whether you write a comment, chapter or review. They don't even have a basic spelling checker implemented. In a way this is good, you can check your writing skills without any help from software. I actually like the idea, but boy is it annoying. Sometimes you just mistype something on your keyboard, and don't notice that during editing. This basic spell checker has at least a chance to point it out. On Royal Road, it doesn't.
For new writers, this is very useful. Having a spelling checker is a plus. Of course you can get external software, but we are talking about websites, not external software.
Royal Road allows you to post your patreaon and paypal links. They will be displayed at each chapter and at the general overview of your novel. This is great support for authors, because those interested are exposed to your paid membership or monetary support options. Whereas at Webnovel... they censor that stuff out. A dick move in my opinion. You can have those links in your synopsis, but if you comment your links, they will be censored (mildly but censored either way). If you post links in your author notes, those can't be copied.
Although a dick move (a bit), this protects you as well. You can't easily copy the text of each chapter, because you can't select any words. On Royal Road, anyone can just copy your stuff without much issues.
On webnovel you can get contracted. If your novel does well, you can make some money. At Royal Road, you can't be contracted, you only get paid from your patreon and paypal (if you have them). This means, your book can be paid or free at webnovel, but it will be always free on Royal Road. Free on Royal Road because Patreon is not Royal Road, it's a different site. The benefits you offer there for people who sign up, has nothing to do with Royal Road.
On Webnovel, yea you have the contract. I chose not to take it, but that doesn't mean you shouldn't either. You gain more popularity due to contract, whereas on Royal Road, nothing changes. If you have 1 or 50 supporters at Pateron, Royal Road might just stay unaffected, all is tied with ratings and reviews.
Overview
I think I talked about most crucial points here. So this will be conclusion (By the way, good job getting this far, if you actually read all of that). I recommend Webnovel to new writers, and staying on Webnovel for a while first. If you think your skills are up to par, or your story is doing well, by all means try publishing on both platforms. (Maybe even other platforms if you wish. Stuff like Wattpad and so on).
If you want to start at Royal Road, bare in mind the quality, and the ratings you might get. You can surely make it there, I just think it's harder for new writers to do so. Going on both platforms at the same time is viable, but remember that you can't get a contract with Webnovel, if you go multiplatform. They will want exclusivity with your novel, when you sign. Maybe you could get to some kind of understanding, if your novel does really, really well.
Don't let my experiences stop you though. I'm just one guy, while there will be loads of people who will tell you Royal Road is great. I think otherwise, and you can probably see this bias in my words here. But, I tried to be as objective as I could be, and give you pros and cons of both websites.
I will also say this. I didn't write this post for compassion. I'm writing this for those who wonder where to start and if they should go multiplatform. There are benefits going multiplatform, on any websites you choose. More views means more recognition, or income or whatever your agenda is. The disadvantages are well, you need to spend more time now, as you have two or more website to worry about. Your novel can be good at one site, but have worse rating on the other. Either way, what you decide is up to you. I will be going with multiplatform in the future again, but not with Royal Road. There are other websites, where you can publish your novel. I mentioned those two, because I had experience with those two. Thanks for reading, and see ya I guess? :D