Okay, so I tried the "Bing it on" test.  If you don't know, it's supposed to be a study orchestrated by Microsoft to prove that supposedly their search engine, "Bing" is better than "Google." 
For the test, you type something into the search box and it brings up a split screen of Google's results side by side with Bing's results.  There are 5 rounds, so you can begin with something incredibly vague and gradually become more specific. 
So, I began with something simple which I like; bohemian style skirts.
I gradually altered my search to include length, then length and a price range (<$20), then used color and finally both color and the already mentioned price range. 
Now, I personally don't like a busy/image filled page unless I type in "images..." which I did not. 
I also attempted to use the word "images" in my search, however doing so gave images of the clothing style, or multi-colored skirts. 
Generally...3 out of 5 rounds it's a draw...I didn't like the results of either search engine, or both came up with basically the same information.  Overall I prefer Google to Bing.  2 out of 5 rounds that is.  So, if there is a greater number of draws, then would that not mean that both Bing and Google have offered either the same amount of information, or that neither has offered enough information?  A draw basically means that neither search engine is better or worse than the other.  So, no I did not "prefer" Google or Bing...it's a draw. 
Unless one of the search engines can read my mind and figure out exactly what length, color/shade, design and price range I am looking for, then neither search engine is better and they both offer the same information.  Bing just adds stuff you weren't searching for...videos, images...etc.  If I'm searching for videos, I can easily type in "videos" and Google has the option of viewing videos on a sidebar.  Goggle's sidebar offers other options as well, which this test does not show; the test limits features of the competitor which may influence the outcomes. 
It is also easy to manipulate this test.  It is not a user specific test, so it doesn't know what you want in the ways of content. and results of searches vary; you may want and think you are searching the most up to date information, however it may show old/useless information...another way Microsoft is trying to stack the deck: useless info on one side, better info on the other. 
Overall, it's a useless endevor and I choose Google, have been since '04.  It's established and easier to use.  And often times Bing itself (apart from the test) will bring up information on something completely different from what you typed into the search box.