People saying the PS3 version runs fine are incorrect, period. It runs fine if you're not bothered by low FPS, I mean it's not unplayable or anything, but it's constantly running at an obvious sub-20 FPS in fire fights and certain areas and even lower in under certain common conditions. I truly feel for any PS3 Mordecai players (not that sniping is worth a shit, anyway).
But don't get me wrong, the 360 version is hardly butter either, especially when you start hittin' bugs, it's 30 FPS with lots of dips in lots of places, it just doesn't choke up as poorly as the PS3 does during big fights/aiming/certain effects/areas.
And the PC code is HARDLY optimized. Someone told me Gearbox said the PC was the lead on this, and I feel inclined to say that is a lie.
This game is not tech heavy or really that pretty, my rig is not top end, but it's still fairly nice and I run at lower reso due to wanting to play on my HDTV. I don't fall below 30, but as far as I'm concerned, with my settings I shouldn't fall below 60. (fuck the menus too, btw)
It's a good game, but theres pretty obnoxious tech faults on all platforms, normally I dont really care about this stuff, but when you stack em with the bugs and failings in options/interface, it feels worth bringing up.