No, you demonstrated that Win/RT has a bunch of features that have been shown to me kind of "Meh" from a tablet OS perspective from both reviews and sales. Some are just not as relevant for a tablet OS and others are simply implemented so-so.
Of that list the multi-user accounts is the only one that strikes me as something that I would really like to have on iOS.
No. That's not the assertion. The assertion is that MS has good pro apps just like Apple. Not the platform but the company. As near as I can tell they don't. Not like FCPX, Logic Pro X or Aperture. So what "pro apps" are you thinking of because enterprise and office apps are explicitly covered already as their own categories.
Just like Apple doesn't sell any service platforms like Azure I don't believe that MS sell any "Pro" apps.
Does "pro" mean "pro video", these days?