Well, if SE is satisfied with 6 million, then I think they'll be pleasantly surprised...I was expecting more around 7-8 million lifetime. I think between the ps3 and 360, it should do pretty darn well...by the time it releases in the US and Europe, the combined install base should be around 65-70 million consoles. And it will probably have close to 1.5 million sales in Japan already. 4.5 million copies between US & EU with both the ps3 and 360 should be pretty manageable over its lifetime.
PSN ID: Sorrow880
Gamertag: Sorrow80
Wii #: 8132 1076 3416 7450