YTD Comparison of NPD and VGChartz.

[famousringo]

TWRoO said:

NPD also didn't start till the first full week in January because NPD December ran into it, so they don't include the week ending the 5th Jan.

Give me a second I will make a table you can copy (assuming those NPD numbers are correct)

edit. this is the correct set of VGC numbers to correspond with NPD Jan-Jun

Console	Wii	PS3	X360	PSP	DS
America	3,911,078	1,711,802	1,638,405	1,680,688	3,628,702
NPD (USA)	3,482,000	1,608,000	1,354,000	1,482,000	3,187,000

The thing you have to understand is that it is generally ok to take off 10% (from Americas) when you are talking about the whole market... but individual consoles can sometimes differ slightly because they are more or less popular in other countries (PSP used to do terribly in Canada, PS3 used to as well but I think it picked up, 360 used to be comparitively more popular, I am not sure about now because we haven't had a recent NPD for Canada)

So if you add up all the consoles together. and then multiply NPD by 1.1 it comes out very close to VGC (I think VGC is about 200k higher) but like I said, the PSP doesn't do so well in Canada, but DS and Wii now do better, so using the same rule on them is slightly flawed.

 

I'll see your table and raise you a % comparison.

Console	Wii	PS3	X360	PSP	DS
VGC Americas	3,911,078	1,711,802	1,638,405	1,680,688	3,628,702
NPD (US Only)	3,482,000	1,608,000	1,354,000	1,482,000	3,187,000
Percent Difference	12.3%	6.5%	21.0%	13.4%	13.9%

 

Average difference between NPD and VGC across all platforms is 13.4%. If you adjust NPD numbers up by 10% to estimate the rest of the Americas market, then Xbox 360 is the only hardware which is more than 10% off NPD's estimate. I've seem to recall ioi stating that he thinks NPD undertracks the 360, so I guess this is expected.