Good better than 50% although Pryor may have roughed him up a little and been all over him. I think that they were both shorter than floyd
Not good vs any ATG matchup unless you want to give him the ref, judges, vegas, IV, TUEs. In any head to head matchup, I'm not sure he'd have any chance if the playing field was actually even.
Between 130-140 I'd give Mayweather a better than 50% chance vs anyone in history, 147-54 And you can start to find guys who could win or at least be very tough
IMHO, Floyd loses to both in their prime. The Hawk, is a 1000x improved version of wild swinging Maidana and Arguello lands a right hand that rocks Mayweather as if he'd been hit by Wilder. Face facts. Each generation of boxer gets weaker and weaker than the generation before. Mayweather would probably have fought Arguello, but would have ducked Pryor like SRL did.
Pryor he outboxes, pretty straightforward. As considerable as Pryor's speed and power were, Mayweather has more than ample timing & chin respectively to deal with those. Argüello is a different matter. At lightweight, the seasoned & fully-matured article of Flaco Explosivo could just be too much technically for the LW version of Mayweather. (which is to say that Argüello was brilliant, not that Mayweather didn't already have finely honed game even by then)
"Pryor he outboxes, pretty straightforward. As considerable as Pryor's speed and power were, Mayweather has more than ample timing & chin respectively to deal with those." I'm surprised you went with Floyd on this one IB. I see the entire fight going like the first 4 rounds of the Oscar match. Pryor would keep him covered up on the ropes the entire fight. He wouldn't let Floyd have a single moment of rest. Floyd's defense would keep him from getting KO'd (you say chin, I say shoulder roll would be the factor) but would not win him the match. Pryor UD IMO. Floyd's closest fights were both swarmers. Pryor is more than a swarmer, he's after blood!
I agree,floyds greatest win at ww was against either a past it injured pac,whilst being caught cheating or a cotto who was shop worn.he was very calculated who he would fight and when.no doubt a great fighter but a natural ww like pryor would give him fits,srl,srr,hearns and duran all beat him convincingly imo
I'd pick Robinson and Hearns vs a 147+ PBF Duran and Leonard are pick em fights with Mayweather being a slight favorite vs Duran at 135 that increase as they move up weights. Leonard I'd have the opposite with him as a slight favorite at 47 that increases at 54. Win or lose Mayweather would be a tough out vs anybody in his weight range mainly due to his focus whether he was fighting a World Champion or a journeyman he had the same intensity towards his comp no off days a very underrated trait that makes Mayweather a live dog in any bout.
They'd be awesome fights, I reckon. I'd give Floyd a good chance against both, but I would never count out either without being able to actually see the unique style clashes in both cases.