Stumpokapow
listen to the mad man
Son of Godzilla said:For fucks sake stop with this idiotic "statistic". I love how we are now at "exact same" instead of "well, the results of this maths I did on some fuzzy data have an integer in common, they must be about the same".
actually the math makes perfect sense.
if the xbox sells 10 units this year and 20 units next year, and we assume everyone buys them on january 1st, and 40 pieces of software, you could say that's a 1.33 attach rate, because it is. it's also a 1.0 attach rate per console per year.
the reason you do a person-year attach rate would be to help mitigate the negative impact of sharply growing hardware sales on attach rate, and also mitigate the positive impact of sharply declining or slow hardware sales on attach rate.
if you take the number of person-months the consoles have been owned for, the software purchasing rate is exactly identical for all three.
what's your issue, with the concept or the math?