No, the boost isn't an illusion. In viewing Kinect it's important to consider what sales might have been like without it. 360 was trending down and was looking, even in US, like it was slowing up a bit. First the redesign (which I do think doesn't get enough credit in all this BTW) and then Kinect turned the situation around to one of growth for the 360 and delivered great sales both for HW and SW for the console, particularly in the US.
At this point, I think the worst you could say about Kinect is that it's effect has been muted outside the areas where 360 was already doing well. If MS hoped it might change things drastically in Japan for example, then sure that hope has - so far - been dashed.
I think it's clear that Kinect (coupled with the redesign) has had a positive impact in a number of ways:
- solidified 360 in US and given it a huge holiday boost
- sold better than expected to existing owners as well as driving an increase in baseline demand in US
- established 360 with credibility with new demographics in US and to a lesser extent UK and some other territories
- successfully gave the 360 the desired "mid life boost" and changed it from trending down YOY to trending up
The only negatives I can see are:
- no major impact in Japan at all - predicatably it was a bust in Japan, and surely represents the last throw of the dice that could deliver any change this gen
- lesser impact outside US in general - yes, Kinect did best in US by a fair bit. Pickup in EMEAA in general was much weaker next to US and it doesn't seem to have troubled the PS3 in those regions
- the "mid life" boost was confined to the existing 360 profile - i.e. it raised 360 where it was doing well but didn't significantly change the shape of the market for 360
- arguably lacking a killer app to date which may leave it exposed going forward if the library isn't rounded out and given some "must have" titles - but there's still time for this and new titles are for sure coming
So sure, I guess if Kinect was expected to kill the Wii and make the 360 king of the heap everywhere it underdelivered - but did anyone sensible really expect that?
It drove growth in core 360 markets and looks like it will successfully extend the life and demographic reach of the console. It's for sure going to be a successful peripheral and establishes MS in motion control gaming for the rest of this gen and into next gen if nothing else. I'd say that was a good enough result vs the cost.