I consider at this moment any class should be consider better than other, especially talking about DBOG not the previous DBO, because there are a lot to fix yet and there's not balance btw classes, for example 1 week ago turtle were the best class at pvp due a bug, when they were originally made to be the best pve class in the game. In the Beta we will see x).
Yeah, naturally every class is weak agaisn't other. Crane's are weak agaisn't wonder majins, SK also weak agaisn't wonder's. And wonders may be weak agaisn't MA. IMO.