Taking advantage of Black Friday, Amazon released an ad comparing the iPad Air unfavorably to its own Kindle Fire HDX, making Amazon the latest in a long line of tech giants to set its sights on Apple’s tablet in an ad. Amazon’s ad takes things a step further, however, by making things personal and mocking Apple design chief Jonathan Ive. The Kindle Fire HDX has a 2560 x 1600 resolution display, which amounts to about 1 million extra pixels over the iPad Air’s 2048 x 1536 display. The HDX is also 20% lighter than the iPad Air, weighing in at just 13.2 ounces as opposed to the 16.8 ounces of the iPad Air. And the kicker: Amazon’s Kindle Fire HDX