Zkuq on 30 January 2010
GTA IV DLC is definitely not a system-seller. I also doubt FFXIII would be out by now, considering they already did release a Japanese version of the game in 2009 - it was localization that took time. Sure, the game could possibly have been completed earlier but it's not certain. And even then, I doubt it would've made a big difference. The game's a system-seller but not as much as you seem to think.
And I'm also not so sure about MS buying FFXIII, as much as I believe them buying games for their system (exclusivity or multiplatform). It's a very expensive game that's been in development for years - I'm sure Square Enix has though PS3 exclusivity to be a risk. And ports that come too later don't generally sell too well.
