Does it look good that Mayweather never fought Cotto,Williams, Margarito and a prime Mosley ?

Maybe Cotto, no one believes that Margarito would even hit Mayweather once over 12 rounds, and at least Floyd fought a better version of Mosley than Manny "Shane, you are too good for us" Pacquiao. As for Williams, the Kevin Garnett lookalike, no one cares about him.