Cotto kicks ass. Shane wasn't really close to his prime though. He's been past it for years, it's just he's become a shell recently.
Actually Shane wasn't prime when he faught Cotto. He was simply younger. I wouldn't compare the Mosley that PAC and Floyd fought as the same. PAC wanted no part of the Mosley that destroyed Marg, but Floyd took him on and was stunned of course, but went on to dominate. PAC took on Mosley when he was done and deep fried. Cotto is true warrior and your story is nice and cushy, but Floyd by UD.