There's an old adage in the tech world:
"Any sufficiently advanced technology is indistinguishable from a rigged demo."
The quality (or lack of it) of any demo you see online is primarily a measure of the video production and editing skills of the person posting it. It says very little about the practical martial skills of the person demonstrating -- it's a demo, by definition it's not a real situation -- and absolutely nothing about the particular art as a whole.
I think we are talking about embu here - at least I am, and I am pretty sure Peter is. And those are by definition an offering of the true essence of the art to the kami. Mortals are sometimes allowed to watch.