Brink is one of the few AAA titles that is scheduled to hit the shelves in May 2011. Check this comparison between the PS3 and Xbox 360 versions of the game - notice the slight differences when it comes to anti aliasing. The 360 version smoothes edges better but suffers from more noticable pop ups which are not depicted in this comparison.
Please note that the differences in contrast/brightness are console specific (i.e. "Super White" on PS3) and depict the real contrast levels you get on your screen.
Interactive Slider Comparisons (Drag Sliders and/or use the browser zoom function for a larger view)