Apparently you haven't played the game. its worse than a port. Its buggier, and you can't even adjust the controls. They didn't even bother allowing you to customize your controls exactly how you want them, and the other controls screen is just a picture of a 360 controller. The game is already a piece of shit.
Oh, and it runs like shit on a 4870x2, and it looks worse than consoles.
You can configure the controls, well, the keyboard controls at least through the Custom Mappings menu option. Who uses a console controller on the PC?
I do think it's fairly obvious it is in fact a port. The fact they have the XBOX360 controller layout in the guide, requirement of a Live account, blah blah blah ... it just proves it to me.
However, I'm enjoying it so far. My [email protected] and BFG 8800GT OC aren't haven't any problems that I can tell with the default configuration, which was 1680x1050, Medium Texture, Very High Rendering.