No, he couldn't. He wasn't able to win with all the advantages, I think if it was a more even playing field he would have got beaten more decisively on the cards.

His best night was versus Vargas, but Mayweather is never a LMW, if they were to have a fight at their primes at any weight below & including 147, Mayweather would win. Oscar's stamina always let him down against better-conditioned fighters & he always struggled with counter-punchers for me. If an old Whitaker could keep the fight close with a prime him, a prime Mayweather does the same but better.