"These searches returned no matches on Google or Bing — or a tiny number of poor quality matches, in a few cases — before the experiment went live. [...] Only a small number of the test searches produced this result, about 7 to 9 (depending on when exactly Google checked) out of the 100. Google says it doesn’t know why they didn’t all work, [...]"
The writer apparently thinks these results justify concluding the article with this takeaway:
"When Bing launched in 2009, the joke was that Bing stood for either “Because It’s Not Google” or “But It’s Not Google.” Mining Google’s searches makes me wonder if the joke should change to “Bing Is Now Google.”