If your analysis is correct, you should be able to explain a scenario under which, given Google's experiment, Bing's result for "hiybbprqag" came from somewhere other than Google.
It came from the Bing toolbar tracking the user browsing. Yes, obviously "hiybbprqag" came from Google. But that's because they only tested it on Google.
They never tested the fact that it could have come from any other website as well. Thus, they can't conclude that Bing is copying Google or whether its copying the user's browsing behavior.
> They never tested the fact that it could have come from any other website as well.
It doesn't matter, Google is only complaining about what Bing has copied from Google. What Bing copies from other sites is between them and the other site.
What is that scenario?