The JWS are not the only ones that fudge reports, although I do believe that some are over meticulous in there numbers. We have gotta have some honest people in that 7 million number of active publishers. They evidently are not posting on here.
I have done statistical work for the Government, and their methods also fudged some numbers. They fudged it to get more money for their budgets, more equipment, hiring of more staff, trying to look good, to prove a theory....etc.