no way is floyd jr tougher than carmen and carmen fights the whole three minutes of every round and gets stronger as the fight goes on.
I think Basilio would grind Floyd up. If he hated Robinson's guts for his huge ego and arrogance, he'd hate Floyd just as much, which not a good thing at all for Floyd. Basilio could easily walk through anything Mayweather could throw, but the same cannot be said about Mayweather. I think Basilio would push Floyd far out of his comfort zone and grind him up to win a decision. Floyd's superb defence keeps the fight going.
They fought in 2002 at 135. The Floyd who fought Mosley is a very different fighter. I just don't see how the Castillo fight is relevant at all, in the same way Basilios multiple losses and draws are irrelevant. If I remember correctly he lost to and drew with a guy who lost twice as many fights as he had won.
He sure beat the faster Robinson, Not to mention He gave Kid Galvian life and death in there fight. Yes I felt Basilio won that one.