So why are you quot the stats from it?,Height P.S.S.S. is a statistic
Like it or not the average height of people NFL coaches have decided to retain at the position is 6'2" ,Kurt Warner 6'2" and a host of other high quality Qb's in the league past and present that do well at that height it only means something if you want it to ,how tall was last years Sb winning Qb? The loser?
Yes it's a manufactured point because there are too many people that height and less who have succeeded wildly. It is not an indicator that predicts failure.
Like it or not, the QBs starting this year are an average of 6'3.5" and a median of 6'4". I don't care how tall the players riding the bench are.
It's a manufactured point, does height matter for WRs? There are 13 WRs in the NFL history to record 800+ receptions that are 6'0" or shorter. There are 2 WRs in NFL history to record 800+ receptions that are 6'4" or taller. Does that mean that it is better to 6'0" or shorter as a WR than to be 6'4" or taller? That's what the stats say. Or could it be that 6'4" or taller WRs are much more rare than 6'0" or shorter WRs?
Now, consider that sort of context and add it to the QB position. How good do you have to be to get a chance to start for a few years in the NFL at 6'1" or shorter at QB? NFL teams don't draft a lot of those guys highly. 6'4"/6'5" QBs...they draft a ton of them. That's what they look for.
There are better odds you'll end up with a bad 6'4" QB starting(cough Blaine Gabbert cough) than a bad 6'0" QB.
If you honestly think height doesn't matter at the QB position, you need to go take the time to talk to some football coaches. Because height means a lot.
The shorter you are, the more you have to do to compensate.
It's not a manufactured point. It's a well known thing in the football world. I don't worry about what predicts failure or success. You've chosen to create that strawman on your own. I worry about what a guy can and can't do. If you're Drew Brees and you can compensate for your lack of height, awesome. I'll think the world of you. But most of the guys can't. And you can see it in the way they play the game. Russell Wilson is actually a rare example of a guy who really can't compensate like Brees can...but he makes it work because he's such a good scrambler and such an accurate, poised, and intelligent QB.
I'm not worried about trying to take one attribute and predict failure. That's ridiculous. I watch the entirety of a guy's game. And watching the entirety of Austin Davis's game, he doesn't compensate for his lack of height well. He doesn't have the athleticism to get away with it. And he isn't decisive enough, composed enough, and strong armed enough to compensate for all those issues compounding on each other. What you have is a kid who has a lot of guts, a lot of heart but just not enough talent.