Lets not kid ourselves here. Everyone saying "He fought Cotto at 154" knows full well that it's because Cotto is/was a small Jnr Mdw the same as Floyd. No way does Cotto rehydrate the same as Canelo does.
how bout floyd do same day weigh ins against all these little guys he keeps pulling up from the lower weights.
That would work. Floyd weighs in at 150 on fight night, which puts him close to the fight night of lightweights. Many junior welterweights weigh more than Floyd. Its incredible how skilled he is that he's constanly beating bigger men.
Canelo is a smart boxer, he will be a threat to Mayweather. You have to be smart to be effective against Mayweather. Cotto showed a bit of that.