I'm confused your talking about article bias, are you refering to the Gamr Feed and actual written articles by the staff. Or are you refering to the articles written on Gamr Connect. Honestly I think the opinion peices on gamr feed are useless as they are just someones opinion and I think that belongs in the forum to be discussed rather then on the front page with the news.
As for threads created by users, of course they have bias they are users opinion's not proffesionally written articles. I myself used to write reviews and articles for a newspaper, as a journalist it was extremely important for me to be unbiased, I spell checked every article and did hours of work for each article. But here on the forum I'm not a writer I am just a member, so I am as biased as I feel like.
If you want unbiased writting don't go on a game forum for it, also alot of our bias in our threads is their with the intent that other users will see different opinions and help contribute to their decisions. Not to mention many are their to cause debates in which the intellectuals of VGChartz gather to debate.
Again I'm not sure if your refering to the proffesionally written articles found on the front page, or the consumer and user written threads here on the boards. But I think bias is expected in forum's and shunned in proffesional game journalism. If you don't want bias don't go on a forum!