you of course have physical differences 6ft 3 centre backs. Pacy wingers, strong front men. But you dont' have any Rhino sized men because they'd be too slow and not agile enough for the game. American football iritates me in that every move is "in the playbook" they'res no room for individual creativity and the kind of showmanship you get from players like Ronaldinhio and jay jay ocacha. you also get several forms of play in football in different areas of the pitch not just the same thing moved up 10 yards. Must say i do like the cheerleaders though.