I agree. I took one look at their test and thought: That's missing the point. They actually don't care if the title tags would hash differently, they care if the title tags are descriptive of the content in such a way that the pages can be distinguished by a human or nlp bot.
But then again, what more could they do? Likely adding the board's owner would have had a much higher statistical relevance.
But then again, what more could they do? Likely adding the board's owner would have had a much higher statistical relevance.