I read through the comments of the video. The only one that had an ounce of intelligence in it stated that due to the NFC icon being square instead of a rectangle, it is from a devkit. So it could mean it's fake as a dev can make anything they want on a dev kit and it will run. Getting it to run on a normal Wii U is the trick.
Until I see this run from a standard GamePad, I'll put it in the "fake" bin.