Hi Termus, I've worked in a non-profit that dealt with this kind of thing; half of our focus was on people with disabilities. What I like about the XAC is that it has a 3.5mm jack for every button that the XBox controller uses, and the advantage of that is that you can use ANY accessible input that is available under the sun. You didn't have to buy the MS or Logitech accessories for them. I'm wondering why you felt you had to do that?
I agree that Sony's effort is not as good. I feel like it was created for marketing and coolness first.