Of all the seasons of TUF and all the PPV fights, there is no doubt, no question that there is a certain mentality about fighters. No matter if they are assholes or layed back they still all have that fighter/ killer instinct, that desire to be competitive. It is modern day colleseum gladiators. To pit one's ability and skill against another's.
I am a really layed back person and I don't have that "I'm gonna kick everyone's ass" mentality, but when I am working out or training I feel that desire to compete with another. Whether it's MMA, football, lifting, hockey, you name it. The point is that it is there in competative people. And Pierce just isn't a competative person. I went to training with 2 tore calf muscles and turf toe to cap it off.
I have a friend like him that lifts @ my gym, decent size guy, square build. He invited me to come work out with him a few times and everytime he ends up talking to people at the gym the whole time instead of lifting. Needless to say I went back to lifting with my normal partner.
To summerize I agree with Danna in the fact that Pierce does not have a fighter (competative) spirit. Pierce knows and he knows he should've changed his tampon, whiped away the sand and stepped up. just my humble opinion.