With the fact being that a large amount of PS3 games are 360 ports, the belief that the PS3 has better graphics than the 360 is generally false.
If anything, the graphics on both systems are comparable, if not identical.
Wait a minute. Sony has come out with 4 successful game consoles, and at the time the Playstation 1 was pretty much the top graphic game console you could get. I think your theory of 360 ports is bullstuff. And the Playstation 3's release was quite some time later so they must have put better video cards and whatnot in, and considering if you are going to get a bluray player, Ps3 is the obvious choice.
Ps3's don't breakdown as much as thee Xbox's. I still have my ps1,ps2, and ps3 and none except the ps1's CD holder has broke. However my Xbox has had a ton of problems a week or two after I bought it.
Xbox 360 has a great community and has a stuff-load of games and all but in a year or so the Playstation 3 will be what the Xbox360 is now due to the time of the system releases.