slncezgsi: 163 ppi is indeed quite a bit less than 263, but on the other hand it is still 60% more than 'common' MacBook Pro laptops. And with a screen of just 8" there is not too much space for photo work and for viewing it should be OK.
Where I would expect to see more of a difference to iPad 3/4 is the price tag which is only some 20 - 25 % (in Germany , cellular models, and depending on the memory) less. So it seems that the screen is not the main price-driver.
So I say - 163 ppi may be OK, but not for the price quoted by Apple at the moment...
This was cool in the Photoshop WOW V 1.0 book but not so much now. And are there really people using Photoshop that need such basic info ?
So it's reminiscent simply for the fact that it's an exterior photo of a person indoors in a lit environment.
Seems like some people are clutching at straws trying to make themselves sound slightly more intellectual than need be.
It's just a photo of a guy sat inside, nothing more, nothing less. Some of the comments are quite hilarious and pompous to boot.