It's not just about disc swapping, although for some games this would be absolutely horrible (GTA), while for linear RPGs it wouldn't be too bad. However, the difference is that when developers aren't limited by space they don't have to use the same restrictive compression techniques, which allows information to stream off the disc faster. Also, you'll run into instances where they will cut superfluous stuff like extra music and whatnot when they port games from PS3 to 360. Not to mention it cuts out the need to ship localized versions of games seeing as they can fit all the info on the disc.
Also, there's really only a $100 difference between the two consoles. People like to compare $400 360 to the $600 PS3, but that isn't logical. The $500 PS3 is more fully featured than the high end 360 and has the same HDD capacity (which is also interchangable with any other hard-drive). Also, because all PS3s ship with a HDD, games will be designed for it in mind - a huge advantage.
And then there's a fully functional Blu-Ray player, which by itself costs much more than $500. You don't have to pay a monthly fee to play online games. It has a better controller. Finally, in my opinion Sony has the best games/developers in their pocket (except for Bioware). When you add it all up, the $100 price difference is well worth it in my opinion.
Also, there's really only a $100 difference between the two consoles. People like to compare $400 360 to the $600 PS3, but that isn't logical. The $500 PS3 is more fully featured than the high end 360 and has the same HDD capacity (which is also interchangable with any other hard-drive). Also, because all PS3s ship with a HDD, games will be designed for it in mind - a huge advantage.
And then there's a fully functional Blu-Ray player, which by itself costs much more than $500. You don't have to pay a monthly fee to play online games. It has a better controller. Finally, in my opinion Sony has the best games/developers in their pocket (except for Bioware). When you add it all up, the $100 price difference is well worth it in my opinion.