Really? What's so favorable to the Wolves about it?
The part where almost the entire chapter goes to war against roughly one company of Grey Knights - who aren't even that keen on fighting the Wolves in the first place? Or the fact that an 800 year old genetically engineered superhuman is better at planning a large scale guerilla war than the average Inquisitor? Or the fact that they narrowly avoid elimination simply because of the blinding awe that people in the 41st millenium experience when merely being around a living relic from the days their god walked among men?
Because from where I'm standing, the Wolves look more like they caught a lucky break, than anything else, really...
Urggh. If I had known that comment would have caused consternation I would have never have posted it.
Anyway, to answer your question, it very much portrays the noble Space Wolves pitted against the evil Inquisition and their duty-bound Grey Knight allies. You have a Grey Knight Grand Master portrayed as a rather ambitious and arrogant jerk who is then easily killed by Logan Grimnar in a single blow.
You basically have the Space Wolves kill a Grey Knight Grand Master, then kill an important Ordo Malleus Inquisitor before engaging the Inquisition in full scale warfare over Fenris before the Inquisition is forced to back off without really doing much of anything to the Wolves.
I have actually discussed that with the author before, and it very much wasn't his intention to have it one-sided in any particular way. It was the intention to have grey and grey morality. But that wasn't the impression I
got from reading it. I very much walked away seeing this as favorable to the Space Wolves rather than the Grey Knights.
The above is merely my opinion and personal interpretation of course. Everybody is subject to their own look of course.