for now

FF13 and gran turismo 5 have a chance

I would think Gran Turismo 5, that game is THE racing car game of all games. The only problem is being exclusive to PS3 while GTA 4 is on two consoles, but still I think that has the best chance.

For some reason I think Final Fantasy sells are going to be lowered because of the two games (normal and versus) in that some people may buy one first and may not buy the other at a later time, also PS3 isn't so huge in Japan to warrant millions of sells in that region.

FF XIII should.. and GTA V if exclusive and a much better game than GTA IV on the ps3, could sell like San Andreas IMO..

GTA 5

GT5 hands down

Announced until now not

I doubt it. GTA is a pretty important franchise, not to mention the advantage it has in being a multiplatform release. The only HD game that could possibly top it is GTA5.

GT 5 and FFXIII...Or do you count the sales of the X360 and PS3 version together?

GT5 and GTA 5 are about it.

How are we defining this?

Exclusive game to 1 console?
Exclusive game to PS3360?

Theres a list depending on the answer you want.