I don't find comparing two devices on your site to be defensive at all. That's simply ridiculous. They're comparing the two and you, as the consumer, needs to choose what you believe is best for you. How hard is that?
The problem is when a company is doing the comparisons it's usually not going to be completely accurate. When Apple announced the mini there was zero focus on screen resolution. Here Amazon is only focusing on those things it feels are superior to the mini. An independent review would point out the good/bad of both devices.