that "power" is an illusion.
the graphical discrepancy between games is all down to the budget of the game and the art style.
you can expect the best graphics from gran turismo 5 because yamauchi desires that photo-realistic look and he has the funds from sony to do it (look at that long ass development time). on the other hand, you can't really expect EA to throw away that kind of money on its NFS franchise when they have so many other projects to work with (and they put out a new NFS every year).
comparing halo to killzone is like apples and oranges. halo is a sci-fi battle against aliens in lush, colorful worlds with strange aliens and such. killzone is a traditional war shooter set in a black and grey world, featuring humans against humans with red eyes. no real comparison there.
comparing uncharted and gears is also apples and oranges. uncharted is first and foremost an adventure game, so that it focuses it's graphical power on the environment and the character models. gears is primarily a shooter, so it focuses it's graphics on special and particle effects, things like blood, explosions, etc.
even if this idea that the ps3 is "more powerful" were true, that "extra power" isn't game changing. the difference (if there is any) is so small that it's a meaningless discussion.
i actually doubt that there's any "extra power" at all. sony has a long track record of overhyping and underdelivering, and that's what the ps3 is about.
again, it's all down to budget and art style that determines graphics. don't buy into the hype.







