Ok....so tell me what the others are doing that is more impressive.
The easiest thing to say is "everything."
Luke McCown is easily the best choice. He read the defense well, has good movement in the pocket, and his decision making is much better than it used to be. We've only seen him have one day where he looked off. My lone complaint is that he is somewhat predictable. Our defense started to pick up on his methods fairly quickly which resulted in a couple of balls knocked down and near INTs.
Byron Leftwich, he may just be confused by the system, he may just be dwindling. He looks good in the 7 on 7 drills, but as soon as you put a defensive line in front of him he starts to panic. He pump-fakes 3 or 4 times before he ever throws. He doesn't check all his options before he throws, and he stares down whoever he is going to give it to. Really the only thing I see he has going for him is experience. During a crowd noise drill yesterday, he never completed a pass.
Josh Freeman has the potential to be good, but not this season. He has a great arm for the long ball, but no touch. We've seen him constantly practicing with the running backs, running routes into the flats just so he can work on touch. He can't really read the defense all that well, and that leads to bad decisions. Granted, he hasn't thrown any INTs that I can recall, but throwing to a triple covered Brian Clark is always a bad decision. And he has no control over the offense. He got 2 consecutive delay of game penalties during an 11 on 11 drill, and the time he did get the play off, he had 2 seconds left on the play clock.
Josh Johnson, I have no idea why he isn't higher up. I actually just finished reading an article in the paper on why his stock is falling, and they say its because he doesn't get enough chances, and he let the ball slip out of his hand during his one play of the 7 on 7s. Both are valid points, but they failed to mention that he ran a nearly flawless 2 minute drill. On the surface, he looks like a great qb. Good arm strength, good movement, good defensive reads, and he just looks poised no matter what. First play of the 2 minute drill, the defense rushed 7 guys and he stood in there to make a great 15 yard pass. There has to be something that we aren't seeing that puts him at #4 on the depth chart. Maybe its the classroom, maybe its political. I don't really know.
I think Khris, Ryan, myself, and probably Rachelle agree that it should be
McCown
Johnson
Freeman
Leftwich (if he doesn't get cut)