The thing is, and i've said this so many times its untrue.
Both consoles offer something differn't.
Xbox 360
1. Offers gamers an awesome online experience, with downloading of games, demo's and add-ons.
2. The online experience in games is second to none, with voice-features with the mic, and overall experience.
3. If used offline can become rather dull unless you're really into gaming alone. If you want offline gaming solely, go for the PS3.
PS3
1. Looks sexy!
2. Is quiet, and is perfect for those Blu-ray dvds.
3. Decent online capabilities, but don't rival those of Xbox 360.
Both consoles have exclusivities, the only reason, and i mean ONLY one reason i'd swap the Xbox, is for the GT5.