Im not searching for you mainly because you arent getting an xbox, and dont care about the kinect anyway, but kinect has hardware that processes the speech and also software that allows devs to program speech simple. Thats why voice command was only with kinect on the 360 except maybe one or two devs who might have wrote their own code before the kinect was out maybe rainbow six or something, but dont quote me on that, and its why I really doubt even on the X1 there will be voice command with the mic.
Dont forget the kinect can cancel out other sounds and focus on who is talking. Voice anything is going to be better on xbox because of kinect, also xbox has a high quality voice codec so it will be easier to decode what is being said, not saying the PS4 doesnt, but they havent really said anything about it or I just havent been paying attention because I have no desire to buy it even tho I just got word ima get a $3000 check on nov 25th

unexpected money is the best
Anyway, the kinect is very powerful, and the main reason I am getting the X1 and not giving up gaming, its easy to shyt on, but these is no other tech that can match it. Will it change gaming tho