Floyd vs prime fighters?

[THE THIRD MAN]

DLH, Mosley and Trinidad from 1999 all give Mayweather big trouble.

Prime Chavez loses to Mayweather, prime Whitaker would be a chess match, prime KT has a chance (cuts the ring off better than most), but probably loses a decision.

Could Mayweather beat prime Duran at Lightweight or prime Hearns at Welterweight? Despite my admiration for Mayweather's defensive skills, i doubt it.