Sorry if it's old

http://www.gamezine.co.uk/news/playstation-3-and-xbox-360-worldwide-sales-equal-in-2008-$1264624.htm

SHIPPED Q3 2008 (Oct-Dec 2008)

PlayStation 3: 4.46m
Wii: 10.42m
Xbox 360: 6.0m
PlayStation 2: 2.52m
NDS: 11.89m
PSP: 5.08m


SHIPPED 2008

PlayStation 3: 10.77m
Wii: 24.84m
Xbox 360: 10.8m
PlayStation 2: 8.88m
NDS: 31.43m
PSP: 15.39m


SHIPPED LIFETIME TO DATE

PlayStation 3: 21.35m
Wii: 44.97m
Xbox 360: 28.45m
PlayStation 2: 138.15m
NDS: 96.22m
PSP: 51.26m

PSP shipments aren't correct. They are combining "production" shipments with "unit sales". The first is the number of PSPs made, the second the number of PSPs bought by stores. You can't add them together. PSP 'unit sales'/shipments are at 49.5m

Even with 49.5m, that still leaves a 6m difference, which is quite high.

There is no way 6 million psp are out there. I see way more DS on the shelf btw.

It's possible for Sony to have this many units in the warehouses, waiting to be purchased by stores.

Sony shipped only 15m PSP games in the Dec quarter which is well below historical attach rates. Suggests they stuffed the channel with PSP a bit as PS2/DS/PS3/Wii came in around their historical attach rates + a little extra as you would expect.

PSP, the attach rate was ~4.25 over a long period and its more like 3 PSP games/PSP worldwide for the Dec quarter.

http://news.vgchartz.com/news.php?id=2906

I put all the evidence there. From April 2006 to December 2008 Sony shipped 149m PSP games worldwide against 35m PSP portables. But in the Dec 2008 quarter it was 15m games and 5.08m PSPs. To me thats a bit of an overstuffing.

VGC could be a bit low regardless.

As for DS...I haven't seen them since the middle of 2007 (granted not in stores much). DS sales keep increasing so its hard to believe there are a ton of them on shelves. PSP is much steadier and easier to predict I'd wager for inventory managers.

Sony SHIPPED.............

@The source

My only argument since  I cant really argue with your greatness is  the fact that i i cant think of the games that were released on the PSP later last year. Beside JAPAN the PSP has been abondoned by Sony and third party developers. So its normal to expect a lower volume of games. 

Very confusing.

I don't agree, many people did buy PSP3000 just for its enhanced screen without buying any game for it, at least I know I did.

When I look at those numbers:

- 360 and wii are overtracked
- PSP is undertracked.