Kinect chief Kudo Tsunoda has told VG247 that 360's incoming motion tech could only work on the Microsoft hardware.
The exec gave the statement when answering a question on whether or not Microsoft had traded off precision against immersion, given the fact Sony has clearly focused on "precision" as a differentiator in its Move marketing.
"Really, not at all," he said, speaking at gamescom last month. "It's not like we bring people working on Sony Move into the Microsoft offices and say, 'Hey, wouldn't you like to check out Kinect?' And, 'Let's do some kind of precision test between Move and Kinect.'
"At the end of the day it's funny to me. Those people really haven't played with any of the Kinect technology, and I just think that as people see something completely unique that we're doing on Xbox, not only with the full-body gesture stuff, but with the voice and the human recognition system, those are things that really can't be done on any other console, or in any other medium."
Tsunoda said he doesn't waste his days figuring out how to "slam" the opposition.
"People try to figure, 'Oh well, what is it that we can kind of grasp onto as a differentiator,' as you said. To me, I don't spend much of my time trying to figure out, 'Oh, well how can I try and slam other people's technology, or how I can say, 'Here's what's bad about this tech or that tech,' especially when I don't even know, and haven't played with it myself.
"Kinect is totally unique. It delivers something that you can't get anywhere else in the world."
Microsoft confirmed a 250Gb 360 Kinect bundle this week, to launch alongside the motion system on November 10 in Europe.
Kinect releases in the US on November 4 and November 20 in Japan.
PlayStation Move launches on September 15 in Europe, September 17 in the US and October 21 in Japan.