I dont know if anyone has posted this source yet, but it is proof from a neurtal site that they look the same due to a new multi platform engine they have developed.
http://www.gamespot.com/events/leipzig07/story.html?sid=6177331&pid=938686&tag=top_stories;title;6
"For those wondering how this game compares to the PS3 original, the story here is that there is no story: They're identical to our eyes. Capcom had kiosks set up with Xbox 360 and PS3 demos running literally side by side; we couldn't note a difference in frame rate or image fidelity between them. Naturally, this owes entirely to the development efforts Capcom has invested in its new multiplatform next-generation engine, which works on the 360, PS3, and PC. We haven't seen the PC version of DMC4 yet, but a Capcom Europe rep told us that there's no appreciable difference in that version either (provided your hardware is beefy enough, of course)."







