PS3 has bluray and no cost for online play. Graphics are better then XBOX, mics are not as good as XBOX.
Xbox has no bluray, you have to pay for online play.
The only reasons XBOX is better then PS3 is that they get COD DLC a month earlier, better mic quality, and XBOX has Halo and God of War.
Personally, i like PS3 because it has more exclusives, but that's just me.
Depends on the game and gamefly. Sometimes they ship all of their medium games at once and it goes to very low and you dont have the game and have to wait forever.
Medium games are 50% Availability, and it typically takes me 1-5 days to get it.