Halo 3, Halo ODST, which will sell more?

[toastboy44562]

MLD-Ghost said:
no way. ODST is an expansion. 6 - 8 million lifetime.

It also wont have the same marketing campaign.

 

 It's not an expansion, it's a 4-6 hour long game with all the original halo3 maps plus some new ones. I also think the game will be $30...