[aminok]

They explain their methodology:

http://council.vancouver.ca/20160308/documents/rr1presentati...

Does not look easily gameable, and the authors don't strike me as being disingenuous.

[caffodian]

This piece is good also, to explain some of the limitations of the study:

http://www.theglobeandmail.com/real-estate/vancouver/poking-...