Not an easy call to make... might as well flip a coin. I think PW takes a hell of a shot and he would have Tito pretty damn exhausted in the late rounds. I would go with PW on points.
As of yet Williams is yet to prove he lasts the rounds with Tito but he is still improving. His chin seems fine but the dude barely beat Margarito and was well beaten over 12 by Quintana for christ sake. I think Tito would moida him at this stage.
Seen no evidence to suggest Williams would be blown away, so I'd take Paul on points due to high workrate and being a better and faster boxer. PW looked sensational against Winky last time out and I think he's seriously under rated.
You obviously mean in his prime...so I will go with Paul Williams by KO. I am more than certain that he would be a more formidable opponent than the guys he fought lie Oscar with the exception of B-Hop. Tito was great but I think Paul Williams is more talented and more active than Tito. I would love to see this fight ....now if we put them in the ring today I think that it would turn into elderly abuse. Some of you guys might hate me for it but I think in time Paul Williams will more than prove my point.