I'm glad other comments have said this before me, but this is not legit. Reporting host rating with as little as a single customer's feedback is incredibly misleading, especially given some of these folks have millions of customers. Big, important players in the hosting space that are even WordCamp sponsors are missing (like Mike mentions Pantheon). In reporting the results without actually examining whether they're worth reporting you're perpetuating bad data and conclusions, the opposite of what journalism, WordPress-focused or otherwise, should do.