Marg's eye didn't slow him down against Pac,why would it slow him down against Cotto?

[SERVILEV]

Ummm, well first he is Mexican, and he has no quit in him!! BUUUT he was also in the moment, with testosterone and adrenaline pumping!! I can see Cotto Bombing that eye in the first couple rounds, and it having negative effects for Marg the rest of the fight. If Marg last that long?