Yeah, all he does is win.
Rarely has there been more smoke or more mirrors than there were in Denver in 2011. Tebow went 7-4 in the regular season, but none of the teams he beat wound up with a winning record. Denver won those games because the coaching staff did a great job of taking advantage of the novelty of Tebow's strengths. It was the kind of offense that could be a bit of a tough prep for a defense during the regular season, but that never would have been sustainable season after season.
Along these lines, it's worth noting that the Broncos played two opponents twice during Tebow's run--they beat the Chiefs the first time, in a game where Tebow through eight passes and completed two, but the team rushed more than fifty times; they lost to the Chiefs the second time, scoring only three points. They lost by 18 to the Patriots the first time, in a game where Tebow rushed for almost 100 yards and completed about half his passes. In the playoff rematch, Tebow ran 5 times for 13 yards, was 9-26 passing, and the Broncos lost by five touchdowns.
It wasn't an offense that was sustainable. With a decent running attack and a decent defense, it was the best option Denver had that year. That's not a position that any team would want to find itself in again, though.