I love how this misinformation started with my American Weekly Sales article, and how the website combined it with Gamasutra's article on Amazon data.
Don't cite stuff if it makes no sense logically. Prime 3 may well end up outselling Bioshock, but I doubt it did first week, simply because in the Americas, the 360 continues to have the larger userbase.
The website claiming that Metroid Prime 3 outsold Bioshock also was one of the websites claiming that Sony had sold 4.48 million PS3s to gamers by June 30, when in fact the number in Sony's financial report was 4.28 million PS3s shipped to retail by June 30. Vgchartz is by no means perfect, but I like to think what we put up for data and sales trends is at least inherently coherent...unlike this article.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu