Interesting (maybe?) tidbit, in the days of coining 1st/3rd world nomenclature, the then USSR was in fact the 2nd world. But it is fair to say they have slipped a bit since those days.
I have a suspicion that WHM/cPanel servers are propping up CentOS's numbers on servers (I've got 5 WHM/cPanel servers all running CentOS, my non-WHM servers run Ubuntu).