| NJ5 said: @bigjon: I think YoY is quite useful for any period of a month or more, the holidays definitely apply. Why do you think companies always do YoY comparisons on each quarter? I cant see why it is so hard for you all to believe it is selling steady? It is not selling steady as you can see in the territory-per-territory comparison (even accounting for the 2-day difference, it's still noticeably down in Others). Of course the next few weeks will also be telling.
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yes yoy is good for evaluation, but not good for estimation or prediction, like I say to many factors change.
NOW I am reffering to yoy for indvidual systems, yoy for the aggregate market works fine for the most part for prediction (although major macroeconomic changes could alter things, like say a financial crisis, or terrorist attacks or something).
Things work for the most part Like, saying software will double, oct to nov, then from nov to dec. But that does not work as well for (or at all for smaller units).
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut









