Here's a twist on this issue:
I have a chess app that I use on iPhone, shredder chess, and have used in 2X mode on iPads.
On iPad "4" The blown up chess app looks great, is totally usable with smoothed out fonts and graphics.
On iPad Mini, the blown up chess app looks terrible, with fonts very fuzzy, fuzzier than they need to be, as well as pixelated graphics. I believe the word is aliased. Unusable.
Just an observation. I'm newish to iPads so probably it's well known that retina iPads employ some serious smoothing/anti aliasing when using iPhone apps, whilst iPad 2 and mini just literally magnify away,
Cheers
Ps I love them all the mini is a form factor winner for us and has its place![]()
That's because the mini (and iPad 2) use the non-retina 320x480 resources whereas the Retina iPads use the retina 640x960 resources