Bioshock 2 teaser in Bioshock PS3!

[epicurean]

My question is about the game itself. I have it for the 360, and it literally become unplayable during the last level or 2 from the framerate. Is it better on the PS3? I know it still has some framerate issues, but my question is specifically for the last few levels becoming incredibly bad. If they fixed that, I'll sell my 360 copy and pick up the PS3 version....