He could probably be a linebacker or a tight end indeed, and he said QB because of his "court vision" I'm sure.
He could legit have played any sport he wanted honestly. Baseball, Basketball, Football, Soccer, Water Polo, whatever. No sport gets a 280 pound 6.8 guy who can run even a sub 5 forty, let alone as fast as he does it.
I say, imagine him as a goalie for the olympic soccer team.