The difference is that this was not observed from a sting operation where Google tried very hard to show that their rankings were having an effect on Bing resul

The difference is that this was not observed from a sting operation where Google tried very hard to show that their rankings were having an effect on Bing results. It's a happy accident that I decided to take a closer look at and write my thoughts up on. And I'm sure there's more evidence living in Google Analytics that might make an interesting research paper.