Having seen the video, I was appalled. Don't they realize they're shooting at REAL pixels? Points of light on the screen, all with their collective artificial intelligence and tiny CPU hearts. The outrage!
Seriously though, the game looks pretty nice, and I don't see what the controversy is about. Maybe it's just me, but I just see lines of code and model animation. More substantively, it's an exciting story plot and it makes you happy you live in a world without too many cooks shooting up airports.
Bottom line is, if you think *this* looks too realistic or gory, you're just being squeamish.