On the other hand, when the author has a hand in one of the pots it very commonly results in a biased or incorrect comparison if only due to incorrect interpretation of the other tech, so defaulting to dismissal is not a bad heuristic either as first-order filtering to know whether there's a point in spending time in evaluating the post.

Especially when there's no clear up-front disclaimer of the conflict of interest, and here there is not (I went back to check, the post does not specify he works at Microsoft, you have to go and check his about page and/or blog history to realize that he's posting about MS tech all the time)