What or how does Mosley do against Mayweather

Shane says he wants to fight Mayweather.

What could he do that Judah couldn't? I think Judah's quicker, sneakier and maybe just as strong a puncher at welterweight. Mosley's got a great chin thats been tested at jr. welter, so Mayweather's probably not knocking him out, or could he. Or, would Mosley prefer getting knocked out rather than a hard 12 round schooling he'd receive. Could he get lucky?

prime for prime interestinng, now a good fight but shanes slowed enough for floyd too beat him convingsly instead of close