So the 10% range is used for vgc yearly tracking? Anyways vgc stated that they numbers are estimation, but that dosen't stop them, or large publications like internet sites or the guinness book of world record form using it as facts. I even hear Square Enix are using this site O_0

Yup, someone had to say it. But then again, if that's their numbers, they should indeed report it. The method can clearly go wrong, and they should've corrected that long ago. Now, the numbers says DS is above PS2, which would be huge news, what would harm more their credibility?

This has been a though year to my trust in VGC. But, thats another discussion.

2.4 Million PS2s on shelves/ships in July really would be impossible.

http://gamrconnect.vgchartz.com/thread.php?id=129135&page=1

There were less than 600,000 Wii consoles and less than 600,000 PS3 consoles on shelves/ships at the same point in time. Around a Million 360s.

2.4 Million would be more than Wii, PS3 and 360 combined at the same point in time.

No. The 10% range is generally used for Weekly sales. Its nothing official, just a "rule" used by people on the forum.

It simply wouldnt work for lifetime hardware numbers.

10% of 100 Million is of course 10 Million. Hardware sales could be reported anywhere between 90-110 Million. Thats a long way off.
10% of 100,000 is 10,000. Weekly hardware could be reported between 90-110k. Thats not too bad.

Again, its nothing official just something we use on the forums.

supported. we should a link to that article on the front page

thanks for making the thread, no one else thought to make.

Sales for older systems/games have been suspect for years sadly. It's up to one of the site owners to go back and dig up all the information and fix things. I guess they won't fix them because the people that care about them would be in the minority.

As far as I understand, the PS2 isn't tracked from VGChartz at all. It doesn't show up on the weekly charts. So it's numbers are taken from shipments, like other old consoles. Problem in this case is, that the PS2 keeps on selling. So it's entry should be updated. The article claiming DS won against PS2 was simply wrong.

Just to added to this thread... I showed evidences that the PS2 is not more tracked here since Nov, 2011.

http://gamrconnect.vgchartz.com/post.php?id=4966814

I thought this was very solid evidence.

@OP. If vgchartz doesn't have sales figures, what formula do you propose given the shipped numbers to provide a reasonable estimate for the PS2 retailer sales numbers?

Sony's shipment numbers?