So let me get this straight because I'm having a hard time trying to figure out where the "meaningful" part comes in your post.
Gamer A buys a 360 in Nov 2005 and has since bought 25 games for it.
25 games / 26 months = 0.962 software attach rate per month
Gamer B buys a Wii in Dec 2007 and buys no games with it, it comes with Wii Sports.
1 game / 1 month = 1.0 software attach rate per month
Now we're supposed to believe that Gamer B is the more attractive consumer because his software attach rate per month is higher? What if he had bought Wii Play to go along with it? Gamer A would have had to have bought 52 games in total to score an equivalent attach rate per month. Did I make a mistake or is this how your're calculating attachment rates and how you're getting your meaningful numbers?
No offence but your system is much worse than the current system for calculating software attach rates. Oh and it doesn't matter if you take out pack-in games and something like Wii Play because the system still makes no sense.
