Wat is better playstation 3 or xbox 360 plzzz read the breaf?

i have a playstation 2 and wat to get a better console . i want to play halo but am a big fan of ratchet and clank and f1 i want the best graphics and best game play . i like a game with lots of story line behide it. the 360 games i'm not ceen on .i can aford both but want some help to diside .i'm not bothered about the prices i just want to know wat to get and how they are better than ech other