As gaming gets better and better you could become an outstanding OC just by mastering Madden.
Not really yet because it's still not completely the same, I'll take that back, I bet a great Madden player could beat out some current OC's in the play calling department with a training camp and a few real games under their belts.
Because this is essentially just a game of reading and reacting.
Great defensive minded coaches like Belichick are great because they have a complete understanding of the game and they gather as much information as possible. Cough cough, videos, cough cough.
Anyhow if I was a GM I'd make the guy take a team to the SB and win it on madden just in play calling mode if you can't do that no deal.
I'm only somewhat kidding.