[halfninety]

You are talking about bias in the "article level". There could possibly be a "topic-level" bias in the article, that is, if one side is currently winning the edit war, and the author (belonging to the other side) tries to spoil that by exposing the tricks used by his opponents. Heck, he could even be trying to conceal his "topic-level" bias by intentionally displaying "article-level" bias in the opposite direction.

Disclaimer: I'm only talking about a possibility. I'm not familiar with this topic. And BTW, I'd say this article is fine if it only has "article-level" bias.