True enough, but with most games, how often do you have time to sit there and zoom in on something? Most of the time you are busy fighting aliens/nazis/zombies/soldiers/robots/ninjas. If a graphical improvement isn't easily noticeable, does it really make that much of a difference?
Agreed... I have tried this myself and saw very little IQ improvements. Maybe it would matter more if you were zoomed in on a surface? I have no idea, but I am guessing that it would.
(I'm just playing the devil's advocate here. I'm all for having better graphics, but there does eventually come a point where throwing more hardware at the problem doesn't have as great an impact as the art direction).