Earlier quoted context omitted.
Compare any two items in the same category that are 65% apart in price and it probably wouldn't make a lot of sense to choose the cheaper one.
16GB Nexus 7 is $269, 16GB iPad mini is $329, the difference is 20%.
You're also missing the fact that until this update, the Nexus 7 16GBs were only $199, which is a whopping 40% difference.