GTA IV sales numbers - wasn't there a bet?

[colonelstubbs]

Viper1 said:

darthdevidem01 said:
@colonelstubbs

& japan will make it even less

for those that don't know GTA SA sold 500K in Japan

To an install base of 22 million, not 2 million.

When does GTA4 release in Japan? VGChartz doesnt say...