Crysis 2 is better on the Xbox 360, graphically, effects and frame rate more stable.

Crysis 2 was launched on April 23 in the U.S. and some sites have already published their Reviews, IGN's editors say the Xbox 360 version has a higher resolution, more stable in the frame rate drops, perfect lighting and graphic effects. Check with the drafting of IGN on the subject below.

By: IGN 

The PS3 version of Crysis 2 has particular idiosyncracies. After playing both console versions, and playing through the same set of levels multiple times on both consoles, it became clear to a number of editors at IGN that the PS3 version is lacking somewhat in comparison to the 360 version of the game. The game still looks great on PS3, but the framerate is less consistent, the resolution is lower (in the neighborhood of 10% lower than the Xbox 360 release), and certain graphical effects and some lighting appear dialed back. In layman's terms, there are more jagged edges in the PS3 version of the game, and things get choppy more often than its 360 counterpart, which hurts controller response. The 360 is not immune to this, it just doesn't happen as often. 

Review Crysis 2 Ps3

Review Crysis 2 Xbox 360