Ikka, there are varying degrees of depth in reviews,. The key is whether the author has credible work or a suitable background in the subject. If the author does not have a credible background, I certainly would not trust his/her review or comments no matter how many hours he/she had used that piece of equipment. Both of the authors of the two articles are well published. I am not that much into videos, so discussions are academic. Hwvr, the many videos by Ogy Stoilov are respectable enough, though I have seen better ones. Another reason I showed those two articles, and not the one you cited, was to hopefully limit the discussion between Nikon and Canon. Yes, I did see the one comparing D850 to Panasonic and Sony. But using this comparison would lead the discussion to go all over the place. I personally use Nikon as well as Olympus EM1 II, which is excellent in many ways, including videos. But that is another story.