I don't see Barrera a threat past batamweight against any ATG. He isn't all that quick, and he isn't the best boxer I've ever seen. He was a good banger with alot of heart, but I don't see how people compare him to JCC in terms of being the best mexican boxer ever. I see Pacquaio giving him a hard time at any point in his career so I definitely see Nelson beating him up at any point in his career. Nelson was a better fighter.