Actually, I think both arguments prove why drafting is still a crapshoot.
You can look at the stats to support taking a player, but then you miss out on the other circumstances of his success.
You can watch the games and believe a player should be taken or look at his measurables, but where's the production to back it up.
I take production as the greater indicator, and would lean toward it when picking a player, but won't rule out a player simply because of lesser production.
In the end, I just hope that whatever Dallas decides to do will be the best choice. I have players I am wary about for various reasons (including Ginn), but I can't say they won't turn out to be better than I expect.