This article is bum-fluff.
The kindle is a cheap low end android ebook reader, the ipad is an expensive high end iOs device.
We might as well compare a 3 cylinder 1.0 litre granny car with a 16 cylinder 8.0 litre ferrari.
Both cases are remarkably similar. People want a cheap tab/car for general use vs people need an e-penis/penis augmentation and probably still don't know how to use it