PP was physically gifted to be a straight up, m2m, shut down CB. With age, you inevitably lose some of that ability. Has he lost a step or two? It's possible, and maybe even likely. A winning environment though may be just what he needs to eke out a couple more decent seasons. Sherman was never as physically gifted, but he certainly had the mental makeup to adjust to different schemes/systems. From our vantage point, it's unfair to judge their heart & work ethic. But, it would appear that Sherman was more willing and better able to use his intellect to further his game beyond what he was physically born to do. One of these guys did go to Stanford. And no one would ever confuse LSU with Stanford from an educational standpoint.