BJ is the most talented fighter I have ever seen, Fedor included, yet he seems to have no heart for the sport. Cardio is a major part of this sport and he seems to want nothing to do with it. He showed that his cardio was inferior against GSP, and showed it in a major way against Hughes. He OWNED Matt in the first 2 rounds and came out like he was dead in the 3rd. Put Matt's heart against BJ's ability, and that fighter would never lose.
My point? BJ is wasting his talent by not trying to be the fighter he could be, which might be the best there has ever been.