I never said that Walker was Shaq or Duncan, just that they can't shoot free throws either. I have no idea what Duncan's average was but he is historically not a great free throw shooter.
Walker is not great, I never got the impression that he sucks either. He's been a pretty damn good player, if a little enigmatic. I think that it says a lot that the president of the Toine Hater's Club, Ainge, went out and got him last season. No one else on the Knicks plays defense so he won't feel out of place. Adding Walker doesn't make us a contender for the title, but it does make us a contender for the playoffs, which I'll take over the lottery any day. If you can get Toine with the MLE it would be too good to pass up. If you sign him with the MLE it might only be a one year deal so he can reway his options next offseason. But I think that at this stage in his career every year makes him less valuable and he might take as many as he can get here and now. His free agency came at the worst possible time with all these good young bigs on the market.