Remember its at 135, so no one really has an edge.
Hard to tell, because Ray never fought as a lightweight, ever, not even as an amateur. On the other hand, Arguello was a natural from 126 to 135 and had a dominant run as a junior-lightweight (130). In terms of skill and physical gifts, Ray, obviously, would have the clear edge. But then again, if you're saying that Leonard would come all the way from 147 down to 135, that would certainly weaken him and sap his strength and stamina because that's just too much of a stretch, and Alexis would take advantage of that and eventually beat him. You see, Ray refused to fight Pryor even at 140 not because he's scared of Pryor, as some quarters suggested, but because he's a natural 147-pounder and, at that time, his body was maturing that he had to move up to 154 and eventually 160.
Sugar Ray never fought at lightweights. not even in the amateurs. But for the sake of argument, had SRL emerged in the pros initially as a lightweight, I have no doubt that with quaility and capability, he would have either boxed Arguello silly and stopped him by the 12th or 13th round. SRL could essay the role of a defensive master boxer-counter puncherin the earlier rounds but characteristically, once he knew he could take the foe's best punches well and he had them hurt and in trouble, he could easily transfrom into a KO-seeking relentless puncher and would not stop until they are on the canvas or the ref comes to their succor.
I don't think Leonard would fight at 135, he was too large.
If he lost that much weight he would be too weak to fight, if Arguello gained to 147 he would not have his power.
In between the edge belongs to Leonard.
Sugar Ray. That's a slaughter
sugar ray, hands down. one of the greatest ever and in my opinion he is THE best to ever lace up the gloves.
15 rounds
Remember its at 135, so no one really has an edge.