As it's been pointed out, Bing compares more than just the clickstream datapoints. You have to imagine they provide some PageRank/domain weighting to the releva

As it's been pointed out, Bing compares more than just the clickstream datapoints. You have to imagine they provide some PageRank/domain weighting to the relevance. So if you setup a dummy site with no existing pagerank/weight, and performed the same experiement, you likely would not see the same results. However, since you can imagine Google is heavily weighted, those data point score high and can rapidly reflect in Bing search results.