Does the PS3 actually has any game that aren't available on all other platforms ? I know the 360 has the Halo serie...
While, in its first couple years of life, the PS3 lacked exclusives, Sony compensated so hard that they've actually now got more exclusive franchises than the 360. Nobody really realizes that, though, since the reputation of the PS3 not having any games (nevermind exclusives) got set in so early, and Sony doesn't ever make a big marketing production over the PS3's full library.
Anyway, I'm not a PS3-owner, myself, but I felt the need to respond, as I don't like seeing stereotypes perpetuated, after their expiration date.