2D art ages better, personally I find Fallout 1 and 2's graphics more appealing then Fallout 3's low res green muddy graphics.
also New Vegas isn't even 2 years old, how the hell does that qualify as old?
Yes, yes, yes...you hate Fallout 3 and everything it represents with the intensity of a thousand suns. We know.
But your overall point is true, 2D does age better. When you compare FO and FO2 to 3D games from the same era, they look far less offensive. That said, as we get closer and closer to photorealism that will become less and less true.
There is very little about the original post that isn't baffling. Old? WoW graphics? Whut? If someone wouldn't buy F:NV because of it's "bad" graphical presentation, I'm not sure what to say.