Ask HN: Is Bing really better than Google?

The folks at Bing have said, "To track our progress, we conducted tests that removed any trace of Google and Bing branding. When we did this study in January of last year 34% people preferred Bing, while 38% preferred Google. The same unbranded study now shows that Bing Search results now have a much wider lead over Google's. When shown unbranded search results 43% prefer Bing results while only 28% prefer Google results." [1]

My question is: Has any one else done this sort of study? If so, what were the relevant percentages? (And is there any trend over time?)

[1] http://www.bing.com/community/site_blogs/b/search/archive/2012/05/10/spend-less-time-searching-more-time-doing-introducing-the-new-bing.aspx