So now that the Halo 4 beta invite is included with ODST I think/ I know that ODST will outsell all of PS3's exclusives combined this holiday season.  Anyone disagree?  Tell me why. 

I disagree, because Crackdown had a beta for Halo 3 and didn't sell in the range of what you are expecting here. So if we are treating Halo ODST as a spinoff title that isn't expected to get the same sales as Halo 3 I don't see why it would sell like you are predicting because of a demo when Crackdown didn't

http://vgchartz.com/games/game.php?id=405&region=All

If GT5 is launched it will rape Halo ODST sales

Did I miss anything? Halo 4 was announced?

Gran Turismo 5 is the only PS3 franchise that has a chance and even that may be in danger thanks to Forza Motorsport 3.

Aye but that beta key was packaged with Crackdown, a new IP.  This beta key is included with Halo a very well established series.  I can't see the beta key doing anything except adding on to the already going to be huge sales.

@Legend
You don't really think that Forza would cut into GT5's sales enough to make this prediction of Halo:ODST outselling all of the PS3 exclusives in the time frame combined do you?

I agree, all PS3 games combined do not stand a chance to HALO:ODST.

Oops not combined.  I need to stop looking at so many webpages at the same time.

oh ok, without the condition of being combined I can see your point, we'll just have to see how Forza and GT affect each other.