A better piece of hardware? I don't know. Comparable? Certainly.
For anyone not wanting to spend the 5 minutes it takes to put the Play store on the 7" Fire I'd say it's better, except many people I know who have a 7" Fire bought it
because it's a cheap method to get additional use from their Amazon content and
like that it's tied pretty seamlessly to The Zon.
Plus with the Kindle you get the benefit of not having to deal with Nook customer support if something goes wrong.