Ah here is a couple. Call of Duty 2 was a launch game for the 360.
We don't have week one sales.
2 Week sales though were 225,874 in the US. Based on week 3 (and PS3 game sales) i'd guess that meant a launch of around 80-100K. (Why so low, if you look at launch games, they actually got more sales their second week then their first, see the other two games mentioned) So it was about 3 times that on 360 on a console more geared to shooters, but which less consoles around 305K
PS3's shooter was Resistance... and really it's biggest launch game. Wow. Anyway, It sold about 36K first week.on a 139,000 install base. So about a 26% attach rate there.
Another near launch game was Madden 07. Which is similar in that it already had a hardcore following on the 360. Meaning like Black Ops there was a big chance that early converters might not pick it up.
Madden 07 sold ~15K first week. On that 139K install base. Making it around a ~10% install base.
You throw in all the various pros and cons and such, and hopefully that puts things in more perspective.
