I don’t remember making any such statement, and you didn’t question its reliability a few posts ago when you used its contents to deride Mormon missionary efforts. I was merely following up mtolympus’s observation that the ARIS study twopekinguys submitted showed zero growth as a percentage of the total US population between 1990 and 2008, but that since the US population went up, so did the number of Mormons. The website for that study showed an increase from 2,487,000 to 3,158,000.
That study also states that their numbers are lower than LDS membership records due to their study not taking children into account (in this case, the difference is nearly three million). We don’t know about twopekinguys’s missing million members in Brazil; the article he linked to simply said:
"Because he doesn’t know Portuguese, Martinich, project manager for the Cumorah Foundation, which tracks LDS growth, couldn’t read background on Brazil’s census to know if there was any difference in the data collection this time around. In many Latin American countries, for example, only the head of household fills out the census forms, he said. “If the father is Catholic, and his wife and children are Mormon, he might fill out the form as if everyone is Catholic.”