Margarito is looking to get out of the fight with Williams because there is a very real possibility he would lose to the virtual unknown. The difference in Ls is that Margarito stands to make a helluva bigger payday in fighting Cotto and Margarito can save face better in a loss to him than to Williams. Williams is saved by the grace of his own power; he really doesn't do that much well. He's got arms longer than most heavyweights but he fights inside. His defense is piss-poor (see the three left hooks Sharmba Mitchell hit him with in a row) and he's too flat-footed. But as I said, his power alone has carried him through. Considering Margarito is very similar, flat-footed, relies on opponents tiring their fists out on his face and carries a decent amount of power, he could very well lose to Williams and make chump change in the process. Margarito would rather abdicate rather than be unseated and make a killing in the process. Don't buy into the Bob Arum hype-machine. Hell, Margarito may even want to fight Williams but is doing whatever Arum tells him to. A bigger purse for Margarito means a bigger check for Arum.