eBettle is currently at the bottom of our ranking, so I think that it's really not worthwhile to focus on them.
I didn't even heard of this website.
Most of the websites that are listed, I'm not really familiar with them.
But the most popular ones here in forum are not even listed to that "best" e-sports website.
how about sportsbet and Onehash mate.
Include also nitrogensports.eu
All of them doesn't have a thread here in the gambling section that's why you probably haven't heard most of them. Other bitcoin sportsbook that also offers esport like nitrogen aren't included because they don't focus on esport compared to these sites.