Yes, I've seen lots of computer screens where everything is messed up because the users have no idea about the existence of calibration; what I have noticed with the little iPad is different: it appears to give all the images that I find on the web, my own as everybody else's, a sort of sense of thickness, a kind of enhanced substance and tonality - not meaning bumped contrast.
It's why I wonder if Apple uses different standards for its domestic machines as well as for its top-grade monitors, different standards to anyone else, I mean. Unfortunately, I have not seen my own stuff on an Apple monitor and so can't judge for myself.
There is also the possibilty of scale making a difference; it cetainly affects the way I can judge a picture on my own monitor: too big and I lose the feeling, and too small and the same happens. However, as with some Leica-glass wet prints, a difference can be seen if you know what you are seeking or even just experiencing.
Perhaps that's why they have Apple showrooms.
;-)
Rob