[Rummyfan]

The problem is that QB’s really don’t need to be that athletic, it’s more of a mental position.

That's true but... it's even better if your guy is big enough to shed tacklers and fast enough to avoid them in the first place.

[fuzzylogic]

...but do you want your QB to be doing that? (injury probability)...and bias your selection of QB with that being a primary trait? vs. being composed, standing in the pocket, and delivering to the right target every time?