@raygun
well, the cost difference for the games is also left out of the calculation.
pc games cost about 10 €/$ less than ps3 games at launch.
since we compare the prices from a gamers position it is important to keep that in mind.
10 games = 100€/$ to spend on hardware.
and yes, killzones graphics DO suck compared to e.g. crysis with texture mods. ...and it's years old now. (i'm not a fan of the game, but the graphics are still the best around)
sadly, pc graphics are held down by the hd twins because the big projects are multiplat nowadays and why create engines that really take advantage of a pcs power if it's going to be downgraded for the hd twins, which will sell more copies of the game anyway?
the pc versions, if they exist at all, are often poor ports. they can be poor because the pc is so much stronger, it will still run the games at higher resolutions and more details than the "original" console version.