I usually agree with you, but I think you are waaaaaaaaaay off here. PBF would be a favorite in any of those fights.
Margarito has beaten whom of note?
De la Hoya is older now and spending most of his time on the business end.
Spinks couldn't come close.
Winky has great defense but not much punch. He would be too slow to decision him.
Hatton has neither the speed nor athleticism for him to win. It would only be possible if he could lure him into a slugfest, which I highly doubt would happen.
Sugar Shane is past his prime and has been for a few years.
I just hate Mayweather's cowardess as of late and unless he steps up and takes on all comers instead of the weakest title holders then he will never be the all time greatest like he claims to be. Jose Luis Castillo beat him in their first fight, Hatton would smother him and outwrestle him in an ugly Ruiz style fight, Winky is too smart and to seasoned a fighter and would pose all kinds of problems for fraud gayweather, Margarito would be the same kind of threat Castillo was except a bigger guy with a higher punch output, Spinks has the handspeed and the footwork to hang with Floyd and possibly win a boring decision like he always does (just like he did to Zab in their first fight), Mosely has still has a little handspeed left though I agree he is not what he used to be, but Mayweather's fight with Zab shows what kind of problems handspeed can pose. Floyd lost the first half of the fight due to Zab's quick hands, it's just a shame Zab has piss poor cardio. Oscar has the has the handspeed, ring generalship, and punching power to beat Mayweather and if they fought I would bet on him. Floyd thinks retiring after one more fight would make him the greatest of all time, not even close, he still has alot to prove. I admit he's good, but ever since his fights with Castillo he's been picking his opponents real carefully, that's not something an all time great does. When you look at his last eight fights he's fought 4 nobodies (Sosa,Corley,Brussels,N'dou), 2 has beens(Gatti,Mitchell), Zab Judah and Carlos Baldomir, I still need more convincing.