From IGN : "The PC version has been capped at a smooth 60 FPS, while the Xbox 360 version will run at a steady 30 FPS, and the single-player game is, with the exception of a few down-sampled textures here and there, gorgeous. Also, it's the exact same content on both systems. Built on the Doom 3 engine, both versions, from what we saw, are running smoothly, fast, and beautifully."
