Wrong. Comparing or measuring his completion percentage last year against traditional QB's makes no sense because he wasn't playing in a traditional offense.
For example, when the Broncos would run Tebow on first down for 4 yards, then on second down for 2 yards, followed by an incompletion on third down and a punt, that is an identical result to a traditional offense completing two short passes, going incomplete on third, and punting. Tebow is 0%, the traditional QB is 66%. Who cares?
The Broncos offense generally tried to throw the ball on 3rd & long, or to exploit an over committing defensive front. Otherwise, it was run run run. Clock control, field position, first downs. That's what mattered in the offense the Broncos were running, that's how efficiency was measured by the Broncos last year, and Tebow ran that offense very, very effectively (and the results are the proof, can not be argued).
This is why Tebow was able to have games where he would be 8 for 20 passing, yet the offense was perfectly efficient and the team won. Then all of the geeks would run to the boxscore and say 'herp derp 40% he can't play', completely ignoring the fact that Tebow himself ran for 80 yards, produced 2 total TD's, didn't turn the ball over, and led an offense that controlled the clock for 40 minutes.
That's why I say, in that scheme, 40% doesn't really matter. If Tebow was asked to run a traditional offense, yes, i'd be right with you guys, as I don't think he can do that. But who cares? HE WASN'T ASKED TO RUN A TRADITIONAL OFFENSE! As long as you let him run a spread option, the completion percentage remains irrelevant in comparison to completion percentages of QB's in traditional schemes. This is why I can not take the completion percentage criticism seriously, without the context of how the offense was designed to operate.
Of course you would prefer him to be in the 60% range. If he was able to that, he'd be pretty much unstoppable and Manning would be playing for the Titans. There is so little room for error in his play style, that he's probably best suited as a backup. But to say he didn't play well because of some nonsense like completion percentage, is just lazy analysis and not understanding how the stat correlates to efficiency in the scheme he was running.