Probably moreso than any other division. With GSP, there's always the possibility that he gets taken out on his feet. Anderson Silva - the ground. Lyoto doesn't look so scary anymore (though it's a bit misleading/insulting to think if shogun can do it, other can too), Brock - still relatively untested. With BJ, the worst he has ever looked was against bigger wrestlers when he moves up. I can see holes in his game, but they aren't big gaping holes and I don't see many contenders that I feel have all of the tools to exploit them. But hey, time will tell.