BenjaminBirdie said:Of course launch adjusted comparisons work when exploring factors that where such comparisons are relevant. But as you said, it's not relevant to the situation right now, and a monthly sales thread is about as "right now" as you can get.
I think people scoff at it because of the nature in which it's usually used in Sales Age. Like "Hey, 360 is so going to crash hard because look at these launch adjusted PS3 sales," when the whole reason 360 isn't going to crash hard is because it launched a year early and, as has been seen this month, is frequently the biggest earner in the industry month-to-month. Looking at launch adjusted sales ignores those sorts of trends.
We don't just look at a given month's sales in isolation though...we do (I hope) look at things in a bigger picture.
I mean in weekly Japanese threads - weekly! - launch adjusted lifetime comparisons are standard. Whereas they seem entirely absent in NPD threads. Maybe that's just a consequence of how much better organised (IMO) the Japanese threads are, but still. They don't tell you about current marketshare indeed, but they can illuminate other things like relative rate of sales and so on.
If they are abused to make a point that they're not appropriate for I can understand the response, but I've seen folks shout them down when people even just use them as they're intended (e.g. to compare avg sales-rate over given consoles' lifetimes).