Bad graphics, worse soundtrack for the enemies. The guys you kill do exactly the same movements and sounds. Max looks like he is 60 years old, bullet time leaves something to be desired and its very short
As for its translation to Xbox, it's a revelation. Not only is it as visually faithful as anyone could reasonably expect, with no discernible compromises save for the resolution, but even the controls feel right.
On the first run through, chances are you'll encounter the end credits in a mere six, possibly seven, hours. Fortunately however, this shortlived interlude will be one of the most enjoyable of your gaming life.