I remember back in 06 or 07, FMJ is already a legitimate 147 whilst Cotto is still at 140. Not to mention most of Cotto's 147 fights, he looks small like weighin only 145.7 against Clottey. Up to now even after 3 fights ive watched Cotto in 154, i still don't know why he's there.
Weight didn't change the outcome of Cotto/Pacquiao. Weight didn't change the outcome of Cotto/Margarito II. Weight won't change the outcome of Mayweather/Cotto.