Rocco is pretty damn good. A freshman QB has made a few big mistakes this year, but he's been probably one of the most consistent bright spots.
Watch college football QB play around the country. Given his inexperience, the talent around him relative to a lot of teams, and the results, I don't see how anyone can be disappointed at all.
Much like Purdy, I'd much rather have a guy like Rocco that might force things and take some risks that you have to reign in a bit than the opposite. He is absolutely a QB that can win a lot of games in the Big 12.