A lot of this can put down to VGC completely underestimating sales since the $50 price cut. The numbers that have been put up for USA have been strangely low with PS4 being down YoY most weeks since the price cut, and that should not be happening straight after a price cut. 7 weeks post price cut makes VGC's undertrack of at least 100K per week with some pre-price cut adjustments probably needed as well.

PS4 so close to 2:1 over Xb one now there is every chance it makes it before the end of the year.

So YTD PS4 is ~11.4 Million, 2014 PS4 full year was 14.4 million. Guaranteed PS4 is up YoY by over 1 million. I expect at least 5 million PS4s between 22 Nov and the end of the year.

Bold, Bold claims.... Wii-U making it to 22million units, seems unlikely!

But yeah that is quite an amazing sales figure to announce BEFORE black fridays sales hit, really good strategy too in case there is any doubt in peoples minds before going out to buy a system for the Holidays which one has the most concrete future ahead for games.

Most of all tho it's cool to see that console gaming isn't going anywhere anytime soon.

Dude. Reputation is temporary. ioi also had this reputation in 2006. 

I may be wrong to describe him (the emstimation by him). I am challenging this guys guts to make a site with decent data tracking and make it popular. Because he is incapable of doing it and crying here to complain about the site admin.

That's a little over the top. By your logic none of us can say anything bad about games, movies etc until we "have the guts" to make one.

My guess is that PS4 goes through its shipments much faster than other consoles. So there probably weren't that many PS4s out in the wild when Sony announced its ~29 million shipped number. (And even this guess is based of my assumption that VGChartz weights the data they get so that it's more in line with sales/shipment/NPD numbers. Weights are used constantly by survey firms in a similar manner).

VGChartz was more bullish about PS4s numbers in 2014, which resulted in it being significantly overtracked by the end of the year. The PS4 is just hard to track. But at least we have something to compare it to, unlike the Xbox One.

It should of been one of ioi's more easier predictions though. If we could see it was 1M undertracked from shipped data, why weren't there any adjustments after the financial report?

Are you sure you haven't confused me with someone else? 

As I said before, If I post data myself I make sure it is from a trusted organisation such as The NPD Group, GfK, Sony etc...

If I do post something that it isn't from a trusted source then it is most likely a forecast or an opinion peice. But I don't post estimates by myself. The only time I've done this in the past is for Xbox One shipment numbers but I've stopped doing that now because Microsoft refuse to update us on numbers. 

As above, I don't post estimations with authority in the same way that ioi does for example. I only post data from reputable sources. For example the OP is an official press release from Sony and represents their actual sell through numbers to end users. The data is different to that of VGChartz who are not a reputable source as proved by the press release. (Not to mention past evidence when Chartz have been inaccurate on hardware and software sell through)

I don't need to make a website that has "decent data tracking" because this is something I don't need to do. It's better to leave it to the professional market researchers such as The NPD Group, GfK and Media Create who use POS tracking to accurately determine the sell through of Hardware, Software and Accessories in the Interactive Entertainment Industry. 

So let the "professionals" challenge the "authencity" of this site. For amateur people like you it's not a good manner to challenge the work of another amateur. No hard feelings.

Because it sells more in places that are harder to track. As simple as that.

Congrats! Now aim for 40 million units solo!