Hm, that goes every way. I love my iPad, because of the things I can do with it, the "full blown" computer can not even dream of.
What specific things do you use your iPad for?
Reason why I want the Pro is because there are a ton of things my iPad can't do for me.
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So, if its enough, why invent situations that nobody in the target group ever encounters? As a specialist, nerd, Apple hater or Fandroid you will get something different and thats great, Surface however is catering to......well, nobody knows.
I believe Microsoft is trying to expand the tablet market to create a high end space. Just like Amazon did a year ago when they put out the Fire and created a budget submarket.