I wholeheartedly agree, however, that's what the man says, and we have no way of proving he's wrong. But, as another commentator said, if that was the case, surely they would have gone and filmed it again, in order to make the sample more representative.
I get it. Sorry if I came across tetchy, I didn't mean to at all. Typing and trying to sort out music lessons with a computer that seems to hate me. 