After having great sucess against Pacquiao for the first 2 rounds, Cotto went into seek and destroy mode too soon and ended up paying for it. Hindsight tells me Pacquiao would have gotten to Cotto anyways. Cotto just does'nt have the long haul stamina of a real world class elite like Marquez does. Cotto was even losing steam in his last fight vs a one eyed Margarito, and it would happen again to him against any elite he'd face whether it be Mayweather, Pacquiao, Martinez, or what have you.
I only rate the Cotto fight as Pacquiao's best since his rise out of 130 lbs. Pacquiao took a tough strong bull by the horns and took him out to slaughter. Now thats something to certainly be happy and proud about!:deal