He's a legit talent at the D-1 level. He's shown himself able to step in and be a very effective scorer and overall offensive player against top competition. We really haven't had many point guards who are clearly better--in fact, it's a very, very short list once you get past guys named Jimmer.
He was also streaky and could shoot you out of a ball game as easily as keep you in it. Rose had a tough dilemma in that two of his most-talented players were at the same position, and his team was playing some awful basketball early in the season. A lineup change was highly justifiable, and what Rose did worked fairly well...for the team. Clearly, Carlino was less than thrilled with his new role, but he seemed to bare it well. Good for him.
Many were also expecting DeMarcus Harrison to have grown into a conference player of the year type by this point and for Chris Collinsworth to have been a major contributor. Had things worked out that way, it would have complimented any point guard at BYU. But things didn't work out that way.
No hard feelings to Carlino; I usually think it's better to stick it out in situations like his rather than pursue greener pastures, but I don't really begrudge the move either. I hope he and his new team do well. I don't see his individual performance being markedly better than it was in Provo, but if he pulls it off, good for him.