One could say that my question is an Apple iPad question, but really, it's more of just a basic tech question about "pixel density", and there are a lot of knowledgeable people in here that I trust, so ... looking here:
"Images also benefit from the Retina panel, but the advantage here ends up mostly being the accuracy of the display rather than the pixel density".
I have an iPad 2, and when I go to the Apple store and look at the iPad 4, which has, technically, twice the resolution of my iPad 2, the icons look much sharper, but images don't really seem much, much sharper. And that seems to be what Anandtech is saying too.
There seems to be a difference as to what the higher resolution can do for icons and text, versus what it can do for images. Anybody have any comments about this ?