You do realize he was a 5* recruit and the #2 PG in his class?
Christon will not be the most talented player we've faced. I'm not saying he's a bad player. In a couple years he might be the most talented player UC faces, but not this year. You have to remember he's still a freshman.
If you want to go by rankings like you did, Trevor Lacey, Levi Randolph, and Devonta Pollard are all better than Semaj cause they were ranked higher, and that's just one team we played.
I would take Lacey and Releford (Bama), Tyrus McGee (Iowa State), Darren White (Campbell), D.D Scarver and DeAndre Kane (Marshall - even though we didn't face Kane) and Oregon has about 3 players just as talented.
I would probably take Christon for the rest of his career, but UC has faced better individual players so far.