Defensive forces at Center aren't even close to as important as they used to be. The talent at Center these days is a joke. With a more consistent jumpshot and free throw, Griffin will be the most unstoppable scoring force in the league. And unlike a guy like Stoudemire, he's a top notch rebounder, and one of the best passing bigs in the league. You can find defensive forces at center a lot easier than you can find a guy with Griffin's ability to score, pass, and rebound.