No offense, but go back and watch again. He has allowed the quarterback to be hit a few times (not sure about sacks ... can't remember). I do remember one play where Sam Young (I think) allowed a sack and Bright's man arrived at almost the same time. He's been beaten primarily by quick swim moves to his inside, but it hasn't happened all that often.
I'm not saying he's played bad, but he's had his moments. He does tend to have some problems in space, but stalemates and drives his man when he gets his hands on him.