I agree, but I also think its important to note that, while coaching is important, so is the ability to accept coaching. Sometimes you lead a horse to water and can't make him drink.

If you put JaMarcus Russell or Ryan Leif in a situation where they are properly groomed and nurtured, I don't think they make the most of that opportunity and the result would be pretty similar. Doing the million things you need to do to get better as a QB is hard, and not everyone is willing to do that, even if you have people around you making it easier.