I think yards per attempt is misleading as well. All qb statistics cannot be viewed in a vacuum.
You throw a lot of screen passes and vertical routes off PA and you'll have a high YPA without making many difficult throws.
You hit it right there. In general like I've said, it's hard to compare QBs because they play in different systems, with different personnel, and different play calling. It's a tough thing. As you know I know our system very well because I break down our offense. So I know that comparing our offense to others is like comparing apples to oranges.