I don't have a lot of time but I wan't to chime in. Pac is a great fighter with a great chin, its not ever worth disputing these two facts. You don't get the consistant wins over the quality of fighters he has beaten without being great. Some of those fighters were past their greatest days, don't let any fan of Pac tell you they weren't. BUT, they were the best fighters in the division when Pac came to the scene and he performed brilliantly- and furthermore he would have given them hell in their best days as well. Its not luck. He has also taken shots from each of them and held up, so at these weights and given these conditions he has a great chin. If he didn't, to be honest, Marquez would have dropped him in the last fight. Obviously, this isn't the same chin as the one we saw in the lower weights. Anyone in here will tell you I am the furthest thing from a Pac hugger. So take my post however you want to.
I would like to see Manny fight Campbell if he is able to beat Diaz convincingly in his next fight, although I am hoping that Campbell-Casamayor happens before so the division can be completely unified.