Jesus that would be an ugly ass whoopin put on Witter. He would in no way shape or form beat Margorito.
Horrible style matchup for Witter, and Margarito is much bigger to boot. Witter's the better boxer in pure terms, and Witter would be more likely than Margarito to beat some of the elite names, but head to head, Witter would get creamed.
Witter by KO 1 JK!! Acutally probably Margo by KO1 is possible but i would say late round KO after a brutal beating.
Witter is too small, Margo would take it to him with no regard for defence, it would be a straight mugging.
Only if Witter wants a career ending mauling would he be dumb enough to want this fight. Junior is going to have to hope that he gets knocked out cold in a couple rounds to escape a phenomenal beatdown of a lifetime.
Witter is good.....at 140.....but 147 is a whole nother ballgame, as Hatton found at recently. Margarito has too much stamina and too much punching power, for Witter to keep him off him for more than 8 rounds or so.