spartan117 on 22 June 2007
| TheSource said: All sales figures are estimates. No tracking agency in the world accounts for every purchase. The best most can get is just above tracking 1/2 of all purchases. However, NPD does track 60%+ of USA data (which is more than ioi tracks), so the fact that the numbers last month were over 40% too high meant they had to be lowered. Adding in the extra week (June 17) takes the numbers just about back to where they were, since the data was less than 100k too high, and 360 sold 70k+ last week. |
NPD and Media Create collect a lot of data for their "estimates". VGC just asks some shops how the situation is and estimate the sales. So if there are deviations of 70'000 solds per month....what deviations can happen during a console-life?!?
