I'm not entirely confident that Cam is entirely confident that Joe can even throw the ball over the middle. Go back and look at his incompletions from that game, and (while there were plenty of missed bombs, yes) the vast majority of what you see will be misses over the middle. Joe has two settings on his arm: deep floater, or ten feet too high. Even his backfield passes to Rice generally cause that poor guy to jump three feet in the air just to catch; if we had an average tailback, Joe would have been cut by this point.