There are far too many variables at this juncture. The game could most certainly reach such a lofty sales figure. However that is entirely dependent upon two factors. One that the game retains the inherent quality of Halo 3. Two that the game is a sufficient evolution over its predecessor. Truly we cannot use ODST as any kind of metric given that it was an expansion, and thus did not have the raw amount of content that Halo 3 possessed.
This said if it is simply a high quality retread then no it cannot reach such sales figures. This sadly is a very possible conclusion. Given the developers love of repackaging last years fair with a few new bells and whistles. I do not see that kind of demand for reused maps, weapons, and modes. Really it is a question of courage. Does the developer have the courage to really step away from the framework. Hell to just have the conviction to provide shear volume.
That is what remains to be seen. It really is a question of whether you think the developer has it in them. Do you believe they can or do you think the allure of being safe is too much for them to ignore.







