There you go. It's in no way a 50$ difference in gameplay or graphical features. So a nobrainer for PC people. They even have the extra option of higher res and better AA.
Better framerate if your pc can handle, better textures, better AO, better resolution shadows, more props in levels, tesselation in characters, objects, rocks and terrain, better precision tressFX and a face that seems to be having a really bad day.
On the other hand, you lose SSS, better accessories physics, some more leafy trees, a less oppressive lighting, and tuned gameplay.