Forza 3 - 3.5 LT might get close to 4

NFS - over all LT +5 million

GT mobile - 10 million LT

GT5 15 million, will break GT3s sales when its all said and done.

Reasoning for GT sales so high is rather simple, its one of the huge franchises (Halo GTA) and there wont be any successors during current hardware gen. Online updates/DLC will keep GT5 going for years. And before yahh all get you're panties in a bunch try to remember GT3 hit on a 12 million user base and GT5p aka (demo) called by many of you sold 3.7m.

NFS could go anyway so I'm not bothering with that.

GT5 - 7.9 - 8.5 Million

Forza - 2.3 - 5 Million

Forza 3 -- 3.89 Million

NFS -- 5 Million +

Gt Mobille -- 4 Million LTD

GT5 -- 10 Million

EDIT:

@seece

for the first time in a bazillion years a NFS game is actually looking good, don't loose hope!

Forza 3 - 4.25 Million

NFS: Shift - 3.5 Million combined

GT PSP - 4.5 Million

GT5 - 11 Million

I dont think that Shift is going to do that good, too much competition from better games. Plus its not like NFS can be trusted anymore to produce good games

Forza 3 6.5 million if they bundle 8

NFS 4-5

GT Mobile 1.5 - 2

GT 5: 6-7 million bundled 8

Really, What makes you think one will make such a large drop and one a huge jump?

Those look like sound predictions to me RPG.