Regardless, the fact that he does not bother to research the facts he is trying to talk about means that what he is talking about is highly suspect. Whether I'm off by .02 or not is a radically different situation when he is more than 10 times off the number. As far as I can tell, and I've seen numbers like these float around on VGChartz before (mostly from old NYT articles), every inch of this is pure estimation and the more estimations that pile on top of one another the less accurate the whole mess is.
You do not have the right to never be offended.