First, they said he wouldn't be a first round draft pick. Then, he'd never start. Then, he'd never win. Then, he'd never be able to turn the season around. Then, he'd never make the playoffs. Then, he'd never win the division. Then, he'd never win a playoff game. Well, he did all that.
So, now they're saying that even if he wins the Super Bowl this year, that won't be enough! Bronco fans are taking it in stride, and so does the team.
I sympathize with what you are trying to say, but unfortunately Tebow hasn't done enough to silence the critics with the exception of last weeks game. I see the big reason why they can't stand him is that I can count at least in 4/5 occasions this season where the Broncos have relied on other teams to breakdown in the final minutes of their games:
1. Miami - letting in 15 points in the last 5 minutes of the game after letting none in all game
2. Jets - failing to prevent a 95 yard drive at the end of the game after having no drives the entire game going more than 60
3. San Diego - in overtime has the ball at the Broncos 30 and instead of taking a FG on 3rd down run the ball and lose yards, then proceed to miss the FG
4. Bears - Barber running out of bounds to give enough time to drive for a fg then proceeding to fumble the ball in OT
5. Steelers - driving down field in the last minute of the game for the fg on denver 45 and snaps a bad snap that sends them back -11 yards to take them out of fg range. Then a false start 2 plays later for another 5 yards lost.
If one of those things does not happen Denver is not facing NE atm. Tebow as a qb does not provide the passing stats to defend himself at that position. His stats have only backed up the following:
1. He only got to be a starting qb through popularity, not through skill.
2. He only won most his games through luck/coincidence, what ever you call it, not through playing a full game.
3. He backed into the playoffs, he didn't win his division, the raiders lost it (you could even argue the chargers lost it).
So yeah I can see where the critics are coming from, It wasn't until this last game that he provided us with something that looked like a QB. You can't get mad at them for what they are saying unless Tebow does something really drastically amazing in terms of QB play (that isn't throwing 7 Hail Marys) to win the game. Cause until he does otherwise, they are basically right.