The base price of the 3DS XL is still higher than the NDS ever cost in general, isn't it? Yeah, there were sales, but even still, the NDS didn't take off big time until it was $129 as I recall. I think there is still room for growth in 2014, at least in the US.
I think it should be >1.1m no? I remember that people were talking in the prediction thread that the 3DS LTD in the US in November was 10.4. So, if 3DS LTD now is >11.5, that makes it >1.1m for December no?
I don't think it's entirely about the audience PS Camera detection is bad in Just Dance 2014, especially with 2+ players. Whether it's Ubisoft's or Sony's fault I don't know, but the experience is far better on Kinect, even the Xbox 360's Kinect. As for PS Move (the other way to play the game on PS4) it basically equals Wii/Wii U controls, but buying a Wii & Wiimotes remains the much cheaper option not to mention this is the first Just Dance with online multiplayer, which is free on Wii & Wii U.
Also, Just Dance Kids 2014 spin-off released (October 2013) on Wii+Wii U+360, while the previous entries (Just Dance Kids, Just Dance Kids 2) had a PS3 version as well. It seems Just Dance is becoming irrelevant on PlayStation hardware.
What's more interesting is the fact that several sources (NPD, France numbers, UK charts) show that the Just Dance series is finally seeing a huge drop-off It'll be interesting to watch how Ubisoft handles the future of the series, considering it's now their second biggest franchise.
That probably depends on what people the PS4 draws in. It still has mainstream value in streaming without secondary subscriptions, and the casual audience IS fickle. And the camera is selling well anyway.