Jaws is the preeminent quarterback evaluator in the analyst game. He notes that Kaepernick has better accuracy than Cam Newton, more size than Robert Griffin III/Russell Wilson and more speed than Andrew Luck. His MLB-caliber pitching arm is as powerful as there is in football. Jaws also believes Kaepernick will evolve into more of a pocket passer as time goes on, exposing him to fewer hits. Kap is the odds-on favorite to win Super Bowl MVP at roughly 2-1.
Btw, 49ers offensive line is ranked first according to PFF, I'm sure that has nothing to do with his success though.