I think the difference would be the players on the field. Meyer would have the talented guys warming our bench lighting up the scoreboard. He knows how to make guys play well. Additionally, our team would be infinitely tougher under Meyer.
On the other side of the ball, Tebow would be a redshirt freshman without the experience he got in 2006. Harvin and the other talented young guys wouldn't be playing. The defense would be soft. The O-line would be weak.