You may have been "on record" as saying he was better than Nik, but he wasn't. And the fact that he has higher NBA upside doesn't change the analysis any.
The guy we're seeing in the NBA now is a much different looking guy. He's a lot thicker, and it's helped him a lot.
He was a very good player three years ago, to be sure. He might have benefitted some from a more wide open system, though in ours he wasn't asked to run the pick and roll all that much, certainly not nearly as much as Nik. But I really don't think our system was holding him back in any way, shape, or form. He's just a guy who has been constantly getting better. His body control now, and his fluidity, is way better than it was at any point with Michigan.