Imho, a comparison between this and any android/apple tablet is totally useless, for the simple reason that one cannot 99% of the work you can do on a surface pro on any other tablet.
Sure, you can do some writing(on sub-par software), or perhaps some designing(again, not seriously) on an android or apple tablet, but once you start thinking of real production applications, you simply cannot do those on a regular tablet.
Thats where the power of this Surface Pro tablet lies, not in casually browsing on your couch/on the move, but in applications like a fully fledged office suite, photoshop(with a dedicated touch sensor for stylus support with increased resolution thats included in this tablet), or even things like matlab.
So again, all the people saying you'd better buy a galaxy tab or iPad, you're kinda missing the main point of this tablet imo.