I've updated the article. The title is staying though - can't fit in "fastest game on a single platform to reach 15m" not enough room in the headline after experimenting with it for about 10 minutes. The main thing is I had forgotten Modern Warfare 2 had an 8 million launch week. It dropped like a rock after that (relatively speaking - still huge figures) and so if we were to look at it this way:
Game Week One LTD as of June 26
X360 MW2 4.8m 11m
Wii NSMB 2m 15m
Obviously there are very different patterns for the two games. Multiplying week one by seven fold in 7 months is amazing, as is a 4.8m debut on a platform that had fewer than 40m users at the time. If you throw in the PS3 version, then yes, Modern Warfare 2 is faster but I don't see a reason to punish Nintendo for only releasing its games on a single platform while most publishers need several. By that definition, it is the record-setter for fastest game / fastest exclusive as the two MW games are slightly different, both recieved huge advertising budgets, etc. My guess is NSMB Wii will reach 25m faster than MW2 will reach 25m on PS3 X360 due to the nature of how they're selling and competition in the shooter arena - at that point this argument will look silly.
Hopefully Brett will add the software comparison charts, as it would have been easier to find my error that way.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu