Kinect is almost solely responsible for the X360 resurgence in 2011. I can't believe we are on this site and many of you are denying it.
The problem with this "widely accepted fact" is that it is neither widely accepted nor a fact. It is not widely accepted, because several of us are saying the contrary. It is not a fact, because it is difficult to actually find a person who was really excited about Kinect. This is especially true if you interact with people in real world USA. On paper Kinect Adventures sold a lot more than Halo. And yet finding a flesh and blood person who liked Halo is easy. I don't like Halo, and yet all of these people keep coming up to me and saying how great Halo is. On the other hand I actually do like Wii Sports, and I know many other people who do too. Yet finding a person who liked Kinect Adventuers is really tough. Where are these people?
I think that's it, people dont want to admit something "casual" was responsible for such large sales.
I certainly don't hate Kinect. In fact I think it is a hilarious device. Ironically it is the people that hate motion controls that seem the most willing to praise the Kinect and say how great it was for the XBox360. I actually like motion controls. I wish Nintendo made more motion control games. But as someone who likes this type of game, I can tell you that motion control fans didn't like Kinect Adventures. It was never a craze.
I don't like FPS games. I couldn't tell you which entries in the Call of Duty series were the good ones and which were the bad ones, and they all sell many millions of copies. And yet fans know exactly which ones are good and which ones aren't. Perhaps you can't tell which motion control games actually got people excited, because you don't even like this kind of game?
A big problem with this post is at the beginning you talk about a large amount of hardcore gamers that play party games are who bought Kinect but later on exclude Wii from your marketshare comparison when going by your previous statement a whole bunch of Wii sales should consist of hardcore gamers who also like party games since Wii was the ultimate party game system.
Why is Kinect considered a novel device played by hardcore gamers but Wii is considered a novel device played only by casuals? Also why are you assuming that PS2 didnt have a large amount of casual gamers? The entire PS2 vs 360 marketshare part just doesnt make any sense.
June-December 2011 being up YoY actually supports that Kinect was moving hardware. PS3 Slim released in Sept 2009 and look at the huge YoY decline in Sept-Dec 2010 compared to Sept-Dec 2009.
What Shadow1980 says about the Kinects other capabilites makes a lot more sense to me. When they first XB1, they focused a lot more on its TV capabilities than they did on Kinect games.