@ czar,
I think you are drinking a bit of the Kool Aid. Floyd not using his legs is a sign of his aging. He looked a little more winded than usual against Cotto in the corner between rounds too. Maybe that was because he was having trouble breathing from the bloody nose, IDK, but the signs are there. He's made his style work with his efficiency and hasn't had to use his legs as much but a physical fight against a strong welterweight will sap some of his energy for sure.
To be clear, I think Mayweather is far and away more skilled than Robert. The Ghost has been my favorite boxer for at least a few years now and I'm happy to see him get the fight but I probably put my blinders on for a fighter I like less than most boxing fans. I call it like I see it. Robert is pretty slow at 147 lbs, so Mayweather will see those punches coming which isn't good. Guerrero's best option is to rough Floyd up. Guerrero throws a good left uppercut and somewhat of a funk sort of left uppercut in the clinch that might help. But Father Time is the brother of ring rust. They go hand in hand breh. Floyd has done well to avoid it in the past, but he's getting older and sometimes fighters get old overnight.