does Cotto go to Number 1 p4p if he wins ?

Definitely not. #3 at best.

For beating Antonio Margarito? No way. On paper this is a fight Cotto should win. It will mean he is one of the most dominant boxers around though, and if he can find a few more menaingful opponents then he will be a good candidate. His problem will always be though that he is simply not as talented as Pacquiao. Cotto is more skilled than Pacman

For beating Antonio Margarito? No way. On paper this is a fight Cotto should win. It will mean he is one of the most dominant boxers around though, and if he can find a few more menaingful opponents then he will be a good candidate. His problem will always be though that he is simply not as talented as Pacquiao.

i'd put him at number 2 behind pac...

He might move up the list but he wouldn't surpass Pac. Probably won't surpass Joe C.