Well one good reason is Isaiah Hartenstein was way too low, that needed to be corrected. The other is the position they list him at, it's telling. I'm sure if they thought he was a C/PF or even PF/C he'd be much closer to the top-10. Given what they think of his position, they proabably don't think he's as scarce a commodity as you might assume **cough**Ike Anibogu**cough**
I think it's fair to ask; Is he really a better prospect than Julius Randle? I'm gonna have to say no at this point..
I don't think of him like Randle at all... He's a 5 to me and I still like him in top 10. I know he's not as tall as is ideal for the position, but in the new NBA you don't really need 7+ footers at the 5. He's like a better version of Biyombo with better floor game and better hands. I'd take him over Hartenstein 10/10 times.