Oh, and how anybody can actually think that McGary is a better player than Zeller is beyond me. Zeller has actual post skills, McGary is essentially just a hustle player at this point. I mean, I don't even like Zeller that much...but he's far better than McGary.
I can see the reasoning behind it. Both will be role players in the NBA. McGary already knows how to be an effective role player, so therefore his transition may be easier.
Zeller will have to go from being #1 option, to a role player, and that transition may be harder for him.