Minus Anti-aliasing, which is a performance intensive, yet very important graphics feature. Here's a few pics where you can see more than a few jaggies all over the place. I'm linking to them rather than posting them, because they're all pretty big.
http://www.zing.cz/gamefiles/filesystem/913/91340.jpg
http://www.zing.cz/gamefiles/filesystem/913/91339.jpg
http://www.zing.cz/gamefiles/filesystem/913/91341.jpg
http://www.zing.cz/gamefiles/filesystem/913/91344.jpg
http://www.zing.cz/gamefiles/filesystem/913/91345.jpg
http://www.zing.cz/gamefiles/filesystem/913/91343.jpg
I'm no PC fanboy, but I don't think saying the Definitive Edition looks better than the PC version means much when you've got something as important as AA disabled. I'd rather play a game on Medium with AA enabled than on Ultra with AA disabled.

