Sample size. McCown had a good half against a terrible D. A good game. And a good drive. He has a 10-year career of crappiness that shows the team would suffer with him as the fulltime QB...and that likely extends to anyone else, beca there is literally 0 chance the Bears get a QB as good as Cutler in 2014. That said, I really like him in his current role. I don't feel like the game is automatically over if he has to come in, which is good. But yeah, put him under the pressure of being the every week starter where teams can study him regularly -- he'll sink back to mediocrity.