Yes, people play the easy classes more than they play the hard classes. That's kind of the point. GEWs get played a lot because they're easy and, as a result, they produce a lot of winners. On a percentage basis, yes, it's entirely possible that Troll Mindcrafters have a higher win rate than GEWs. That's not because TMs are easier than GEWs. It's because the only people who are stupid enough to play Troll Mindcrafters are people who are really good at the game, and can win with any character.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.