I agree though, Miguel Cotto wasn't fighting Miguel Cotto's fight. as against Mosely, he can counter off the ropes, but he also gets hit way too much off the ropes.

As Hatton, Dela Hoya, Ndou, Chavez, Baldomir would all tell you, when Mayweather doesn't want to get hit its a nightmare trying to hit him even, especially, on the ropes. Also Cotto wasn't tying Margarito up at all when he was on the ropes... Mayweather would slip under the left hook and clinch, move away counter, land some jabs, make Margarito miss 15 punches on the ropes, rinse/dry/repeat.