If the author searched for John Hancock Center on Bing (which is the actual name, not the John Hancock Building), he would have not only got the right building, but he would have gotten Venue Maps for the inside of the building.

As someone else noted... he doens't use the term "John Hancock Building" or "John Hancock Center" consistently, which you can see from the screenshots.

He used "Building" for Bing and Mapquest (neither found it). He uses the term "Center" for Waze, Google, and Nokia (they all found it).

I'd suggest the author use the same search term for all tests if he wants to draw reasonable conclusions.