Which do you like better? The PC version has better resolution, but the xbox will mostly have better frame rate. As for control, it's really more of a preferance. I say neither is better than the other.
Well I'm just playing through the PC version of Fable: The Lost Chapters now. Provided you have a pretty beefy video card you can really squeeze some nice graphics out of Fable. But I find the control system of the Xbox version alot better.