It's interesting to compare Canada to USA:

NPD 2007 YTD:

---------CA-------US--------NA------CA%----US%
NDS - 0.70m + 8.50m = 9.20m - 7.6% - 92.4%
WII - 0.57m + 6.29m = 6.86m - 8.3% - 91.7%
360 - 0.39m + 4.62m = 5.01m - 7.8% - 92.2%
PS2 - 0.32m + 3.97m = 4.29m - 7.5% - 92.5%
PS3 - 0.27m + 2.56m = 2.83m - 9.5% - 90.5%
PSP - 0.25m + 3.82m = 4.07m - 6.1% - 93.9%
TTL - 2.50m + 29.76m=32.26m - 7.7% - 92.3%

Canada made up 7.7% of NA console units sold in 2007. 360, NDS, & PS2 match this average very closely, implying similar popularity to the US. What's striking are what doesn't hold this average. Canada made up just 6.1% of PSP NA sales easily well below any other console. Wii was decently ahead of the average, although it's difficult to gauge popularity V US when it's so supply constrained. PS3 would appear to be far more popular in Canada than the US, with the biggest difference from average of any console.

Popularity of Consoles in Canada compared to USA (NA Unit %):

+PS3 - 9.5%
+WII - 8.3%
+360 - 7.8%
~AVE - 7.7%
- NDS - 7.6%
- PS2 - 7.5%
- PSP - 6.1%

*NA only includes Canada and USA in the above figures.

I'm sorry, but this is simply not true. If you've been at VGChartz long enough, you'll see that every platform has been over/undertracked from time to time - exactly as anyone would expect from this kind of website. The PS3 was seriously overtracked in July, when ioi overestimated the effect of its initial price drop. The 360 was overtracked in October by a fair margin. The Wii has been over/underestimated as well on several occasions. It has nothing to do with bias, ioi just goes with whatever numbers he gets. Sometimes he'll be high, sometimes he'll be low.

Leo-j and Crazzyman don't deserve any credit either. They have zero evidence that the PS3 is actually being undertracked; they simply state what they want to see happen. Unless you believe Diomedes and think that the PS3 is undertracked by all tracking services (in all markets, at all times) they simply happened to get lucky here. Even a broken clock is right twice a day.

Just ask me. :P

October:

NDS - 60.000

Wii - 55.000

360 - 39.000

PS3 - 22.000

PSP - 21.000

PS2- 20.000

GBA - 5.000

March:

Wii - 26.500

PS3 - 16.579

LTDs till end of November 07:

PS2 - 2.567.000

GBA - 2.208.000

DS - 1.128.000

360 - 600.000

PSP - 557.000

Wii - 556.175

PS3 - 211.000

Nice one Orochimaru, where did you find October's monthly sales, and November's LTD (PS3 Nov LTD is too low, BTW)?

 http://www.neogaf.com/forum/showthread.php?t=218894

sonycowboy have posted them once in this thread. =) 

ioi does it because he dislikes uppity European PS3 owners... Just ask Diomedes.

Some December positions:

"Still, Nintendo's rivals also did well. With the Wii hard to find, the Xbox 360 was the top-selling system in December in Canada, with the PS3 in second place."

Link

I thought that might be a first for PS3, but it also managed to outsell Wii in December 2006 due to supply issues being the cause then too.

"The Wii nearly doubled the PS3's total units sold, but Sony's system beat Nintendo's offering in December sales as both products bumped up against supply constraints."

Link

Excellent. Now we can easily calculate December PS3 & Wii numbers:

360 - 99,500+
PS3 - 99,500
Wii - 91,000

Sony consoles get most of their sales from Walmart, which the NPD certainly has to estimate.  The same is true for VGC, I think, so based on how they each estimate walmart sales, it could account for a significant difference in that one retailer alone.