Killzone: Shadow Fall single player runs at 60 FPS.

If you needed evidence that PS4 is a beast then check the vid below.

Killzone: Shadow Fall runs at 60 FPS. Though, this is not "always" the case.

Still, no shooter on Xbox One will come close to this. ; )

http://www.gamersyde.com/stream_killzone_shadow_fall_pgw_singleplayer_60_fps_gameplay_no_sound_-31078_en.html