Is Google biased towards its Knol?

Knol is a project that was open to public in July 2008 and considered by the global tech community as Google's answer to Wikipedia. According to Google, the word "Knol" means "a unit of Knowledge".

Few hours ago, I was doing my usual act of googling when I discovered something... 

I discovered that searching Google for "Wikipedia" gives Knol as the 5th search result! It even came before Wikipedia Commons and Wikipedia Mobile!

Surprisingly, I tried Yahoo! Search, Altavista, Ask Jeeves and none of them returned Knol in the first page!

I smell conflict of interest... but I still love Google