| leo-j said: also the difference between sony's figures and vgc's figures ps2 has an over 11 million difference so.. obviously something is wrong with playstation tracking, and PSP is over 6 million in difference |
It is obvious that VGC has the PS2 numbers wrong over the last few years, but the PSP isn't 6m off.
Sony changed their reporting method and depending on how you count the numbers it is easy to double count systems. Sony also doesn't have correct public quarterly report prior to 2006. Using their website numbers you get
| Calandar Year | Sony Shipped (m) | VGC (m) |
| 2006 | 9.6* | 9.39 |
| 2007 | 11.8 | 12.36 |
| 2008 | 15.5 | 13.88 |
| 2009 | 10.6 | 10.29 |
| 2010 | 4.1 | 4.39 |
| Total | 51.6* | 50.31 |
| Diff | 1.29 |
*note that in 2006 I estimated 1.5m units for Q1 since the data is incomplete. 1.5m seems fair considering 2005 performance and CY 2007 Q1 shipments
To argue that the PSP is undertracked by 6m means that VGC is undertracking ~5m units in 2005 and 2004. In other words you are accusing VGC of missing 4m sales in EMEAA in 2005 alone!!! I can say this because in 2004 the PSP was only released in Japan, and in 2005 we have NPD and Famitsu to compare to. I would say at most that the PSP was undertracked by 1.3m over the last 5 years.
To top it off, SECJ just said that they shipped 62m PSPs through sep 2010, while VGC has that number at 60.4m which means most likely that the PSP is undertracked by ~0.6m.
EDIT: heh, I could have saved myself a lot of time by just typing the last paragraph first 
