I honestly like both. Back when I was working on my webcomic I had a chance to be picked by the staff from Tapastic and Webtoon which helps me a lot.
I started first with Webtoon (1.8K followers) then when I decided to take my hiatus (month after), I uploaded for fun on Tapastic (1.6K followers) and from that experience, I can say that readers from Tapastic are more open to comment while in Webtoon even though I had few comments they are more shy, they consumes webcomic differently, almost like fast food. They read and they go onto the next one.
What I find works to get some sort of exposure, is to be consistent with your content and stick with your schedule. Maybe take it more like an actual job and be professionnal about it. Think of each of your update like an episode of a serie for your readers.
When you wait a week for your serie, you don't want your serie to be 15 min while usually, it is 40-50 min long.
But having already a fanbase helps. If you don't, you have to sharp your craft and hope you can get notice by Tapastic or Webtoon.
Also, it's worth nothing that In Webtoon, you don't get notification when your readers interact with you (by comment, like or sub) which kinda put a barrier between the artist and them. You'll have to keep in mind to check from time to time, if you want to interact with your community.