I don't know where this Karaban narrative suggesting a lack of physical maturity has originated or why it has legs. He has a long history of having enough strength to battle much bigger guys to a standstill in the post. It is true he will naturally get stronger and stronger as he ages, and he is not a behemoth to handle Sanogo or Cockburn, or maybe even Dixon, but, he is no slouch and can easily match the Freemantle players of the college world right now, or even a couple years ago. Offhand, I can only think of centers he might be overpowered by, no 4's are coming to mind. The issue at the 4 might be the real athletic guys like Johnson. Karaban isn't going to ever match that athleticism, he is going to need to defeat those matchups with smarts. Any time Karaban spends on the bench next season will be because of another player's excellent play, not Karaban's lack of game or physical maturity.
As an aside, consider our end of game offensive possessions trying to hold a 5pt lead in the last minute. We know Karaban is a great foul shooter, (30/30 PeachJam). In end of game situations we now have Newton at 87.9% on the second most FTA's in the country, Alleyne proven at 85.2%, Hawkins at 82.1% (if he can be trusted not to turn it over), and Jackson at 71.4%. That should be clutch foul shooting and ball handling a la Nova this year. I'm probably the only one on the board projecting Karaban on the court at the 5 over the last 2 minutes of such a game with the lead in an offensive/defensive substitution with Sanogo.