AH, I misunderstood what this meant, then:

The last time it was posted I investigated the reviews on Google play, and every rating was made by a real person, or a bot impersonating the real person. There is no way to tell appart except by contacting the person.

I read this to mean that you were finding duplicate reviews where one set seemed to be bots impersonating the other set. But, your comment clarifies what you meant. My bad.