When is comes to NBA draft busts, the 2013 class may be full of them. While it’s way too early to determine a rookie a bust or a success; top-five picks Anthony Bennett, Cody Zeller and Otto Porter are well on the way. It doesn’t take a rocket scientist to claim that these three were not ready for the NBA. If you add up all their PERs you get whopping 16.64. That’s with Cody Zeller carrying weight at 9.73. To put things in perspective, Michael Carter-Williams‘s PER is at 17.03. So yeah, Zeller, Bennett and Porter have all been under performing to say the least. The PER isn’t the only stat that indicates that Zeller isn’t ready for the NBA grind. Here are two other big indicators that Zeller should be in the D-League.