Mark Rubin: "Hey, been on the road last couple weeks so haven’t had a chance to update, but wanted to confirm that for Xbox One we’re 1080p upscaled from 720p. And, we’re native 1080p on PS4. We optimized each console to hit 60 FPS and the game looks great on both. Still on the road, but glad to see the great reception to Extinction. Can’t wait for next week’s launch."
Upscaled to 1080p... Sad news for Xbox fans!
Same with BF4 too, PS4 version has 56% more pixels on BF4 (native 1280 x 720 on X1 vs. 1600 x 900 on PS4).