Not terribly surprising. Per capita, US and Japan tie for #1 active users of the internet at home or work leaving Brazil #3. The country is the fifth largest in terms of land mass and its population growth is larger than even the US. Plus, it is an economy of force that is the seventh largest in terms of pure GDP!
(Not so sure about your theory about MRH, IOW).
Just a useless fact I felt like sharing.
I was checking my youtube page when I noticed a button for stats.
I have no idea if it's new or not because I've never used it but anyway,
I saw one stat that listed countries that my most views come from.
U.S. was number one and at number two was Brazil.
(I think because of MRH)