Personally 360 > PS3. First, more comfortable controller, especially for FPS. Second, better online functionality (you have to pay, but you get what you pay for). Third, superior JRPG line up (Blue Dragon, Lost Odyssey, etc). Third, Halo (best game with friends ever IMO). Fourth, more pricing options. Fifth, better downloadable service.
They're both great consoles, however I have to give the edge to the 360. And in terms of exclusives, they're now even.



