For most of my adult life my football friends and I has discussed what it is that separates most QB prospects beyond ht/wt and why so many fail. I often spent much of the discussion talking about -what I described as video vision and pointed out those few Qb's that seemed to possess it. Of course this doesn't account for all of it but how many QB's w/ great arm talent and physical skills just stink.
I was recently sent an article by one of those friends who came across it while studying something else and I just wonder why more NFL teams don't look into this. Here is the link
Visual test to quickly check brain function quality developed by scientists | ScienceDaily