The point is to get mismatches and open looks. With Parker they can get them with him breaking down the defense off the dribble. Without him they need to get them almost exclusively with ball movement or a little bit with Manu but not nearly like years past. With Mills they have movement because there's no other way to get mismatches or open looks, not because Mills is so great. And while Mills is more frenetic on D Parker's playing more solid D this year than Miils too. Bottom line Parker >> Mills.