Try and specify that you're talking about graphics, instead of just implying it, because people are going to intentionally twist the criteria of your question.
Anyway, without a doubt it would have to be Killzone Shadowfall for me. That scene where you're descending into the city on the helicopter blows everything else I've seen out of the water. A lot of games have looked impressive in a small Youtube window, but have disappointed when they're ballooned up on the big screen. This game did not.









