That anonymous Lions defender quote that came out yesterday pretty much sums it up. There's no quarterback in this league not named Tim Tebow that would draw a remark like that, and it's not because of his religion or his personality or any of that garbage, it's because he's historically awful. He's the worst quarterback I've seen since Ryan Leaf, and Leaf didn't give a damn about playing in the NFL. No amount of shaping the offense around him will make this guy consistently throw an accurate, catchable ball or know where to throw vs. the coverage on the field. It's just an absolute joke - Orton is doubtless a bad NFL quarterback, but at least he's an NFL quarterback. At this point, I'm concerned that Tebow is going to get killed back there.
The only question is why this is even a discussion.