i contend that only a 100% Tebow can do what he's doing - barely winning nailbiters aagainst sub-500 teams.
Every player gets dings and slows down. If Tebow slows down 2%, he will be losing every game.
Same way vince young won 2/3 of his games for 2 years, then sucked. People get tape on him, they learn the 5 moves he has, defenses adjust, and that's that.