PS3 not getting BioShock, to stay Xbox 360 and PC exclusive

Despite previous reports, I would call them rumors that the PS3 would be getting BioShock, it has been confirmed that the game will not be coming over to the PS3, ever. So there, stop thinking it will.
Joystiq interviewed lead designer Kev Levine of 2K games who said over the phone, "I promise you, there is no secret plan about the PS3 that we’re keeping from people. There’s no PS3 development going on that we’re hiding. There’s lots of stuff that gets into game code, plans change over time and we got an exclusive deal with Microsoft … that’s not a Rosetta Stone discovery."
We reported on this in the past saying that it was not beyond the realm of possibility with a bit of skepticism thrown in. I'm not really surprised it isn't coming to the PS3 because we are talking about two entirely different systems. Now I'm left wondering how hard/easy it was to create a version for PCs and a version for the Xbox 360.
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