pirated games

fuck pc this is about xbox 360 and ps3. i once bought a 360 slim hacked from a store and the graphics looked like a ps2 game basically it was shit compared to the original game so my question is are pirated xbox 360 games much worse graphically than the original game and is it the same on ps3 ???i want to hack my ps3 or xbox 360 but im worried the games will look like shit