I never said wolverine is cheap, just some people who use him are cheap. No character can be cheap on their own, it's the player that decides whether they are playing cheap or not.
example: I played one guy (can't remember who he was though) who did nothing but use wolverine's slide move for about 90% of the game. The only reason I was able to avoid this is because he didn't chose his character fast enough and we had to play on normal mode. Whenever a person does wolverine's sliding move from start to finish it is unblockable on turbo mode until they stop (at least to me because I don't know how to block before the game says "fight").