johnny unitas wasn't even drafted and look how great he turned out. same with kurt warner. tony romo wasn't drafted either. lots of highly regarded college QBs don't do well (Matt Leinart, Chris Wenke, Gino Torretta etc.) you think you can evaluate QB talent but reality is, you are often wrong.
tebow had 3rd best passing efficiency in the nation this season, 2nd best last season. he's extremely coachable and motivated to improve. next season, tebow will have his own QB coach helping him develop. why doubt him? when tebow was a freshman, people said his style wouldn't work in the SEC. guess what? those people have been proven to be stupid.
on that last drive vs. Oklahoma, he was perfect. that pass over the middle to david nelson on 3rd down was a thing of beauty, perfect spiral over the linebacker, away from the safety where only his receiver could get it. that was an NFL throw.