My entire argument was something else completely... But anyways I didn't base anything just on that report, but on other 100% known things as well, like the average age of the consoles, which I'm sure I've mentioned 1 billion times already.
What you call my first problem, I call formulating an opinion from limited information. Their conclusion added to some other things made sense to me. Yeah the data is incomplete, but I think it's PROBABLE that they are correct, I'm not betting my house or even 1 dollar on it, I just think that probably they are right. You know life's a bitch, we don't have the luxury of having 100% complete information all the time to make quaranteed right conclusion.
Your "first problem" seems to be the inability to work with anything other than quaranteed information.
Insufficient data, does not compute applies if you'r a computer.
The rest of your post about the statistics is unnecessary complicated. The fact that the qualifying method was so loose "turned on once a year" essentially means shipped figures units minus broken units with little bit of extra. You don't need all that crap you mentionded (location, age gender etc.) to estimate something like that to reasonable accuracy.
Also are you basically trying to disaprove a report made by a long lived multinational analysts company, by just saying analysing these things is "kinda hard"...
Noboby is suggesting to take them as facts, and in any case usage patterns are different albeit important thing, and were not what was topic here or in the summary of that report. I hope that's the last time I have to repeat that line, because my stress levels are rising.
Edit:
Yeah All I can say to that is that it still imo is slightly more useful than just the installed base number, but the full report should have more usefull information.
There's the table of content for the report
http://www.strategyanalytics.com/default.aspx?mod=reportabstractviewer&a0=6222
I don't think the active user base currently is the main focus there, of course it is what catches headlines effectively. I think the report is mostly about future performance and potentials of these platforms.
+1 Good post.
Tommy McClain