And, as last time this topic was brought up, I feel obliged to point out that HN rank is more than a function of votes, flags, comment total, and time. The quality of the comments, likely determined by the speed and voting patterns, is also used. This, or a similar system, is also reputed to be used to hide the "reply" link during suspected flamewars.

So sure, you could blame some perceived Google bias on Google shills flagging Microsoft articles. You could also blame some perceived Anti-Microsoft bias on Microsoft shills being abrasive and causing comment sections to become toxic (for example, by filling the comment sections with comments complaining about HN rank compared to Google articles).

I see little to no evidence for either, I am not in a position to inspect the complete data to determine what is causing any perceived phenomenon (nor are you, I suspect).