Asik is useful but has nowhere near Noah's skill set. Noah is a better rebounder, as good a help defender, can switch to smaller players, can hit an occasional outside jumper, shoots free throws at a better rate by far, is a much better passer (probably top two in the NBA at center) can fill the lane better and oh yeah, HE CAN ACTUALLY CATCH THE BALL. I loved Asik while he was here but he isn't anywhere near as skilled or as valuable as Noah. About the only edge I give Asik is as a shot blocker.