I couldn't find much information about middle or South America other than due to pricing of the current gen consoles the PS2 does best. PSOne and even Sega Genesis were still sold at shops in 2007, 80% of South American youths below the age of 25 play video games and the bulk of them are pirating the games.
One interesting quote with regard to Mexico:
"In 2004, Sony brought the PlayStation 2 to Mexico, officially. According to Jeffrey Wright at America's News Intelligence (http://www.latinintel.com/), they opened a distribution facility to put the console in retail stores at an affordable price and Sony has sold over 860,000 units in Mexico as of Q4 2007."
I also read Sony Argentina once stated over 500K PS2s were sold there (no timeline given though).
This article is an interesting read.







