Based on the latest numbers provided by Nintendo and Sony for the last quarter we have the following :

PS3 shipped 26.1 million units of software.

Wii shipped 13.4 million units of software.

1.54 million of Wii were shipped too, factor in 2 games bundled that gives 3.1 million units of software more.( nintendo doesn't include bundle in their shipment numbers),

In the end you get :

PS3 : 26.1 million

Wii : 16.5 millions.

yet VGChartz has the Wii selling more software than the PS3 since the start of the year as well as in the month of July...

I know it's impossible to get accurate software numbers but the Wii software numbers looks like they are WAY OFF ( something like 10 MILL off for April-June alone...).

PS : and shipped vs sold doesn't account for 10 million units, the way vgchartz data looks retailers are selling Wii games that were never shipped to them............

Edit : I fixed my wii numbers as they had been rounded

Pretty much what Rol said.

Software might be overtracked but how on earth would they be able to go back and figure out which exact ones were and know to adjust them. It would just be way too complicated so I wouldn't expect any adjustments.

we don't have the numbers per title but we do have the total numbers.

What is really amazing is that there are weekly article analyzing total software sales on each platform that are based on those erroneous total numbers that the site lists....

then stop writing analysis every week or month based on numbers you know are totally wrong........

shhh..we can't let anyone know. if we fix the numbers we can no longer tell ourselves Nintendo is saving the industry.

hmmmmmmm i hadnt noticed the discrepancy.
very odd, and mind-bogglingly difficult to correct

I don't think there's any need for concern here. Wii's library is composed of leggy titles and literally no recent hits so software shipped in one quarter is likely sold months or even years later. In other words, there is little to no correlation between software shipped and software sold in any given quarter. What matters is the overall difference between LT sales and shipped. For Wii, it seems to be 45-50m. By comparison, PS3 seems to be 60-65m. I don't think that it's too much too believe that there's a ~15m difference between the stock in channel for the two consoles since PS3 (software) is sold in far more territories. If it is, Wii might need a 5m~10m downward adjustment. Hardly major since we're talking LT figures.
Let me know if there's some amusingly blatant discrepancy in my logic, 'cause I have a feeling there is...

the second reason I became inactive on this site... fanboys were throwing around in accurate numbers as proof that games suck or this or that... when in all actuality the site just reports bad numbers that are unreliable. Time after time again vgchartz has been proven they cant accurately track sw sales and the only way possible they could is with frequent updates from companies which dont come all too often... this realization came to me when Sony released sw numbers for last fiscal year.... if vgchartz were accurate sony would have piles and piles of games in every single store....

it doesn't work that way.

For legacy titles retailers are the one driving shipment and it is not at all in a retailers interest to keep a huge stock of game. The lower your stock the more money you make ( it's different for newly released titles where the publishers put a lot of pressure on the retailers and tend to overship).

At least as the news come out about HW and SW shipments the weekly numbers as they come out should start to reflect the reality going forwards. As for past maybe simply a across the board adjustment based on the shipment data for the titles that VGC just really are guestimating anyway.