I will repeat myself: that was revolutionary software. You can't replicate that software on any other device on the market right now. This software pushed me from neutral-switch to "this is a legit device that can compete in today's marketplace". That game looked amazing.
People are hating because it's essentially a Wii game but that's honestly the thing that excites me about it. Punch Out Wii with motion controls was janky as hell but it was super fun, and this looks to be more precise and in depth than what is essentially a Simon Says game. Not sure if that's enough to hit with the mainstream market anymore though.