VGC's USA numbers are Americas X 0.87. Source has said so a few times.

:edit: But as you can see here our Non-USA ratio seems to fluctuate a bit from 0.13.

http://gamrconnect.vgchartz.com/thread.php?id=114996&page=1#



Proudest Platinums:
1. Gran Turismo 5
2. Persona 4 Arena
3. Wipeout HD
4. Ninja Gaiden Sigma 2
5. Super Street Fighter 4