Microsoft has been pushing Internet Explorer and Bing more and more lately, and this new "Bing it on" challenge is the latest example of Microsoft pushing their search engine, Bing. While they actually hired an independent research firm to do the study comparing the two (they came up with the 2:1 result), Microsoft is just pushing the result with this new campaign.
It's designed to be fun, easy, and surprising. All you have to do is go to BingItOn.com and run through five queries of your choosing and select the search results you prefer. At the end of the five votes, the site will show you the "score card" of how you voted, either for Google or Bing's results.
Additionally, "to get the word out," Microsoft has launched a TV campaign that will feature someone running the "Bing it on" challenge on the ground. More often than not, the person picks Bing's results and is very surprised when they tell the person that. Microsoft will also be promoting the "Bing it on" challenge in Microsoft stores.