Kantor on 21 January 2009
It's hard to tell at this point, but for now I'll go with Alan Wake. It is on a larger userbase, and appears to be less niche.
In the end, though, it will all come down to advertising and quality. We don't know which game will win in either department, although judging by Microsoft's track record, Alan Wake's advertising will be much better than Heavy Rain's.
(Former) Lead Moderator and (Eternal) VGC Detective 
