Viper1,
Can you point out proof/evidence that NPD change their figures after initial publish ? I heard this kind of thing talked about, but never got any supporting evidence (link to posting or analysis that prove it).
I can understand more frequent changes to supply restricted games like Wii Fit, but how about GTAIV ? I don't think this game are sold out like Wii Fit, and yet there are changes made to it's data (week 7 and 8, both version), which were mentioned in my openingn post.
personally, since I am not active on this forum, I didn't realize that "VGC readily admits it will update sales data as new data is received" meant not only changes related to NPD data or shipped amount from publisher, but also to changes as more retailer data are received. I think this means that the weekly data released are NOT complete retail data.
My current understanding is :
- IF VGC has 3 retailer source, and on a certain date only received data from one source, VGC will still release data using 1 retailer, and estimating the other 2 retailer, using the single retailer data and extrapolating / estimating the other 2 retailer.
- a few days later, once VGc receive data from retailer B and C, if that data didn't fit with previous estimate, VGC will change the previously released data.
Is my understanding correct ?
Existing User Log In
New User Registration
Register for a free account to gain full access to the VGChartz Network and join our thriving community.
