There is no point comparing till we actually get the games in hand to compare against.
Have people forgotten how awesome Killzone 2 and motorstorm looked in their E3 trailers in 2005? Yet when they actually finally released them they were nothing like those trailers.
If PS4 can genuinely pull off Killzone the way they showed it in that trailer then great bonus. However at the same time I remain reserved based on the bluffs Sony pulled with PS3.
Based on specs alone I am expecting Killzone to look better than X graphically.







