I didn't say UNC wasn't a better program. I think he made the right choice for him. I'd do what he did, if I was in that position. My point was about UNC but it applies to a lot of blue bloods. Its hard to be showcased when you're surrounded by NBA lottery picks and former 5 star recruits, unless you're one of them.
Of the guys you mentioned:
Cam Johnson-Went to Pitt first where he had his career high in MPG
Marcus Paige (30th ranked player in his class)-5 games played in the NBA, less career minutes than Amir Coffey.
Joel Berry (30th ranked player in his class)-Hasn't played a minute in the association
Brice Johnson-21 games played NBA, 9 career minutes more than Amir, so far.