My main concern with this "review" is that it comes from a shop that lives off selling us new equipment. The video consequently seems to me more like a sales show than a serious discussion of pros and cons of the new camera.
Don't get me wrong, I got the 5D3 the day it came out and love it. Coming from a 30D I trusted Canon to produce a solid camera that would be a quantum leap for me. But for users already owning more up-to-date equipment the decision is a much more complicated one.
So I find it hard to take a review serious that comes to the unconditional conclusion that the 5D3 is worth its money and everyone should go out and get one yesterday.
About mentioning the D800: apart from bragging rights, I don't think that to be relevant to most users. Switching systems is too big a step, the two cameras would have to be worlds apart to justify that for the majority of users. Comparisons to previous Canon models would be much more relevant. But again, they live from selling us the 5D3, not from telling us that if we already have model x and don't need feature z we can well skip it.