Les estimations des ventes de juillet en Amérique du Nord (USA+Canada) par vgchartz:
Vgchartz July & NPD July Software & Hardware Expectations (July 8 to Aug 4)
Vgchartz July Totals & NPD July Expectations
Before heading into this month´s discussion, a few topics need to be addressed. If you are not interested, simply skip to "Vgchartz Hardware data for July vs. NPD data for 4-week July (July 8-Aug 4)" down below.
State of Vgchartz data
NPD July data for Canada and the United States will be released next week (Wednesday for Canada, Thursday for the United States) at ~6:30 PM EST. Data will cover July 8 to August 4. Last month, Vgchartz data was within 15% on average (to see for yourself, combine the absolute value discrepancy of hardware here -
http://vgchartz.com/news/news.php?id=442 and divide by the types of hardware for the ‘average’ hardware discrepancy) in comparison to NPD’s combined hardware data for Canada and the United States. Since NPD does not cover 100% of sales in the United States or Canada (estimates are that NPD covers 60-75%), the Vgchartz hardware discrepancies are getting to a point where they will soon be within the margin of error values NPD itself has. Software data continues to improve as well, however the variable pricing nature of software and the limitations of Vgchartz data coverage (still under 10%) will prevent this data from improving as steadily as hardware data has.
Assessing Vgchartz in the Wake of the PS3 Price Drop
Additionally, a warning needs to be put in place for this month’s comparison. During July, the 60 gig PS3 had a price drop to $500. Inevitably, the PS3 results will lead to one of two outcomes - renewed faith in Vgchartz, or increased antagonism and distrust based upon the correlation in Vgchartz PS3 numbers to NPD PS3 numbers. If Vgchartz numbers correlate strongly with NPD in the wake of the PS3 price drop, spread the word – because we consider it a test to see if our data is representative of the market. However, if the Vgchartz numbers do not correlate particularly well remember that a) NPD will have trouble estimating Walmart, b) Vgchartz is not a projection based on our estimations – it is based on real, weekly data reports, c) Sony reported ‘doubling’ of sales at 5 major retailers immediately after the price drop. It is likely that these rates are slightly different at each of the five retailers, and that Vgchartz does not cover sample data from all five retailers and d) that we continue to add more sources of data regularly – in time Vgchartz will have data representative of the market.
Vgchartz Hardware data for July vs. NPD data for 4-week July (July 8-Aug 4)
With that out of the way, here is a look at weekly hardware sales for July on Vgchartz:
Week ending:
14-Jul 21-Jul 28-Jul 4-Aug .9 x VGC VGC Total 1.1 x VGC
DS 143,999 146,064 140,151 136,155 509,732 566,369 623,006
Wii 91,116 97,857 95,171 91,946 338,481 376,090 413,699
PSP 59,595 65,501 59,483 55,603 216,164 240,182 264,200
PS2 56,369 60,938 54,701 52,241 201,824 224,249 246,674
PS3 51,763 45,101 43,498 38,852 161,293 179,214 197,135
Xbox 360 34,396 32,538 34,174 35,005 122,502 136,113 149,724
GBA 22,254 23,816 23,725 23,662 84,111 93,457 102,803
The 0.9 x VGC represents NPD US + Canada estimated at 10% lower than Vgchartz. VGC total is the actual reported total. The 1.1 x VGC figures are NPD US + Canada estimated at 10% higher than Vgchartz. For reference, here is a comparison of NPD US + Canada totals from June (presented as weekly average) to Vgchartz totals from July (also presented as a weekly average).
Console
June NPD Weekly Avg (5 weeks). July VGChartz Avg (4 weeks). % weekly change
DS 121,340 141,592 +17%
Wii 86,956 94,023 +8%
PSP 61,720 60,046 -3%
PS2 58,352 56,062 -4%
Xbox 360 42,388 34,028 -20%
GBA 24,274 23,364 -4%
PS3 20,994 44,803 +113%
Vgchartz Top Software Expectations
Lastly, here is the Vgchartz top software for NPD July (July 8, 2007 to August 4, 2007). Ideally, all ten titles will fall within 10% of USA+Canada NPD when Vgchartz is accurate. To see if the titles correlate strongly to NPD, simply add 10% and then subtract 10% to ‘July total’. If Vgchartz data is within that range, then it is accurate in comparison to NPD.
Rank
Software Title Platform July Total
1 NCAA Football 2008 Xbox 360 516,875
2 GH Encore PS2 514,964
3 Pokemon D/P DS 400,528
4 NCAA Football 2008 PS2 258,316
5 Wii Play Wii 207,553
6 Guitar Hero II PS2 162,177
7 Mario Strikers Charged Wii 158,713
8 Mario Party 8 Wii 134,980
9 Nintendogs DS 112,112
10 Guitar Hero II Xbox 360 107,437
http://www.vgchartz.com/news/news.php?id=491
DS 623,006
Wii 413,699
PSP 264,200
PS2 246,674
PS3 197,135
X360 149,724
GBA 102,803
Wii 413,699 vs X360 149,724 
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Les chiffres NPD sortent jeudi prochain, ça va être très dur pour le pc en kit .
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