100% false. There are people that just plain prefer playing games on a console, while the majority of us don't see the benefit of spending $900+ on a new machine that can run it on ultra. Let's face it, might as well play on console unless your computer can run the game on MAXIMUM settings.
Let's try not to de-rail this thread into another one of these debates (though it bears mentioning that an X-Box can only handle the lowest PC settings, so a PC running at medium is still going to be running better graphics than a console).
OP: The PS-3, as mentioned, doesn't have much hardware for the developers to take advantage of.