Noone is the man. You dont get to be the man after beating a guy like Jennings for the WBO strap which was vacated by Paul. Mosley on the other hand beat Margarito for the WBA, but him and Cotto have to fight in order to clean up the mess.:smoke
I say Cotto. Put it this way, the man at 147 will be the winner of Cotto-Clottey vs. Mosley winner. If Williams comes back down I suspect it'll be him, but they won't fight him when they could fight each other, Baldomir, Berto, Jesus Soto Karass, Selcuk Aydin etc etc Williams will have to make his name by kicking Pavlik's ass instead (though not sure how he'd fare against King Arthur)
Shane and there shouldn't be much controversy. Basically fought to a draw with Cotto. Dominated and KO'd ironjawed Marg. Dominated Collazo. KOd Mayo (even though a higher weight) Kod Vargas (higher weight) All this just within the last few years. No one has accomplished close to that!