I've noticed people here criticize AD's defense - and there is merit to that. He has a long way to go and a lot to learn. But because we watch him way more than any other guy in the league, we also are subject to over scrutiny and observational bias. Here is how AD stacks up against other elite bigs in prevalent and important metrics. Without a doubt, despite his youth, AD has an elite level impact. He still has to master the nuances, but it bothered me when people said was simply average and even below average.