I do wonder why people fret about the difference between 720 and 1080 with gaming when there are people out there who can't tell the difference between DVD and Bluray.
Will the difference between 720 and 1080 decrease the ability to enjoy a high quality game? In my opinion, no. I still play retro games, and while they look worse now than they did back in the day, they're still the same game, and it still plays in the same way. Did the jump from 720 to 1080 affect my enjoyment of two different versions of Forza? It did actually. I preferred the 720 one because I preferred the menus and knew my way around it, and while the 1080 one did look sharper, it wasn't enough to keep me playing a game I no longer wanted to play.
Just an observation