>I have here a number of displays, ranging from around 100ppi to around 250ppi. Looking at the same image on the lowest and highest density displays, it looks far better on the higher one when displayed at its native size. If that gets rescaled to make it the same *physical* size, the theoretical best case scenario is that it looks like it does on the low density display, except in practice the better display means that you can really see the deficiency of the scaling.
To be more specific, when looking at the same image at the same physical size and distance on both screens, the difference is that the high resolution display looks blurred - this is with whatever scaler the Android browser uses.
I *hate* blurry visuals. They're tiring to look at because my eyes keep trying harder to focus until they've had a *long* time to get used to the knowledge that they simply can't; that's something that never happens in the physical world, so it makes an unpleasant transition between looking at a screen and looking at real physical objects.
Related: the default font smoothing settings on Ubuntu (picked that only because it's the only distro I've used recently with an out-of-the-box config - maybe others are different) looks like somebody took a stick of lard and smeared it over the monitor; it disgusts me, and it's uncomfortable to read. In this area at least, high PPI displays are a clear win regardless of how images are treated.
I can see that the image-doubling behaviour would be desirable if you value large images over sharp images, but that's a position I can't even begin to empathise with in any way because my eyes find it physically unpleasant.