Tebow is a very good quarterback now and he's got John Elway there to teach him anything about quarterbacking he didn't learn in college. He's substantially larger and stronger than whatever is normal for QBs, so much so that he doesn't have any reason to fear contact with NFL linebackers or linemen and the only other QB in the league that's true of is Roethlissberger and Tebow is stronger and more heavily built than Roethlissberger. Tebow is basically a good quality NFL fullback on plays in which he ends up carrying the ball.
These sportswriters who badmouth Tebow or claim they see any reason why he can't make it in the NFL are smoking too much reefer or something.