The problem is that the honeypot doesn't prove anything. These are rare terms by design so clickstream data is all probably all Bing has to go on, and that clickstream data was voluntarily submitted to Microsoft by Google employees.

Google need to go to some extra steps to show that Bing is copying Google links for popular terms. If Bing is weighting clickstream data from Google searches very highly, that is more or less admitting that other search engines work better.