For all of the back-and-forth on FR, Tebow is just a good, not a great, QB. What he does have, though, is that intangible confidence of knowing how to win. That's infectious and can make a good team great. I've read several interviews with the Broncos who said, approximately, that no matter what the score, they always thought they were in the game. He'll do the same thing whereever he winds up.
The big winner here, I think, is John Fox. He *loved* Jake Delhomme - a pocket passer like Manning - when they were in Carolina.
I'd not want to need to draw up a game plan for a QB like Tebow every week. The fact that the Broncos did, and were pretty successful, speaks as much to Fox's coaching as Tebow's playing.
Fox was a great hire.
Fox has little if anything to do with the offense. The wizards responsible for changing to and implementing the spread were Mike McCoy, Adam Gase and Elway