This is ofter quite true. However have you read this thing? It's a pretty good balanced analysis. Also I think they anonymise vendor names to avoid promoting one vendor over the other
But if what it's selling you is a good impression of the depth and quality of the author's analysis, that's not necessarily a bad thing. I've not read it in detail, so I can't give any view on that.
Look at security breakdowns of security flaws from outside firms that end with 'you don't want to get fucked by this, buy our services'