[quote name='Odinsfury']I actually read that the PS3 version of ME2 was developed using the already completed ME3 game engine. I've only played it on the 360 so I can't say if it looks or plays any better.[/QUOTE]
If you care about that sort of thing, a full analysis here:
http://www.eurogamer.net/articles/digitalfoundry-masseffect2-face-off
The bottom line difference:
"The implementation of the new tech means that there are performance advantages in places, but gameplay seems to be a touch jerkier overall. Graphically, there is evidence that the PS3 version of the game has been pared back a miniscule amount, but the quality of the revisions is mostly first class and the effect on the final game is essentially unnoticeable.
The tweaked lighting is the biggest differentiating factor and in our opinion it is rather hit and miss: BioWare talks about revising it to make the game brighter, but while some scenes undoubtedly benefit from the revised light positions, in many other cases some of the wonderful, nuanced texture work on the original game seems quite flat in comparison. The sense we had from the demo that the lighting is sometimes inconsistent carries across into the full game too, where it sometimes seems as if the positioning of the light sources even seems to change mid-scene.
Technically there is not much of a case for any claims of being "definitive", but perhaps the statement should be judged in terms of content, in the way that a Game of the Year edition of a game might be considered definitive. Having all of the DLC packs available right from the off is certainly a great move, because Mass Effect 2 is a game rich in potential and opportunity with a huge amount of freedom, so more options, more missions and more equipment right from the beginning can only be a good thing. In addition to this, while it's not really a big deal, the ability to play the game on PS3 without having to swap discs is an obvious boon."
Conclusion:
"A year on from its release on PC and Xbox 360, the brilliance of Mass Effect 2 remains undiminished. Given a straight choice across all formats, the PC game's ability to power past the technological shortcomings of the 360 and PS3 with higher resolutions and frame-rates makes it feel like the best technical experience, as we discussed in our
Mass Effect 2 Tech Analysis last year.
Between the consoles, the gap narrows. Technologically it still feels like the Xbox 360 version has the edge, but occasionally lower frame-rates and mostly unnoticeable graphical compromises on PS3 are not going to have much impact on the fun you have playing this game. Scored today, this would still be a 10/10 game on both platforms."