Call of Duty 4 and Guitar Hero III have sold more than Galaxy too.
I think its great that Assassin's Creed has been such a hit. I doubt it will reach 10M, and Galaxy clearly will, but with two sequels, Ubisoft may be able to sell 20 or 25M copies of a new IP just in this generation. I don't think they will care if they beat likely the only main series edition this gen of the biggest franchise in history if they can do that.
Galaxy vs. GHIII will be the most interesting one, IMO. GHIII will fall off when GHIV comes out, but until then it will continue to put up big numbers, and it starts with a 2M+ lead.
COD4 should fall off faster than AC. AC won't have a competing game for a long time; COD4 will have plenty.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.
