Speaking here, Josh Austin, producer for Digital Extremes’ Dark Sector, has said that towards the end of the game's development period the team almost binned the PS3 version because they couldn't get it up to muster with the 360 SKU.
“This is the PS3 version," he said here, showing off the game. "It looks just as good as the 360 version, which we’re very happy about. Towards the end we started having some serious conversations about what we were going to do, but we ended up pulling it off, so we’re very proud of that.”
He added, by way of explanation, "It was just not running as well as the 360."
Sci-fi action slasher Dark Sector's shaping up very nicely, thank you very much, and will release globally in March. We'll have more on the game for you later today.