Xbox: better overall online experience, a lot more convenient features than the ps3, is cheaper, better experience, can load levels/ maps for games faster, more social features, better market place, better variety of games, easier to develop games on xbox meaning we get games usually before you if not they are less buggy, doesnt get hacked, more exclusive content, MINECRAFT and is a gamer console and family console.
Ps3: crapper overall online experience, the features on ps3 are ****, is more expensive but the price did drop, a worse experience, loading times longer, bad for communicating with friends, a good marketplace, their exclusive games look amazing " the last of us", the development of games on a ps3 is bull**** their a lot harder to develop games meaning buggier games or a longer release date, online is free but not as good, less exclusive content (except for assassins creed stuff), gets hacked, was a family console at first but now more a gaming console, no rrod but the yellow light, blu-ray= not needing two maybe three discs but longer load times.
Overall these two consoles do basically the exact same job and are in equal in different ways, both are a good console and you should chose which one you want for your reasons not mine or other people.