ElRhodeo said: Please don't kill me, but I DO think that critics have a point. It's true that VGChartz makes its own estimates, based on samples, and they are not too far off. After all, I visit this page every day and enjoy reading and discussing the latest sales numbers.
But where would VGChartz be without the NPD data? VGChartz can only get away with being somewhat inaccurate because they know they'll be able to correct their numbers by the end of the month. That IS unfair. NPD has to invest more money, manpower and time to get the most accurate data they can; VGChartz just have to make it to the next "NPD checkpoint".
I second most of what you said, John Lucas. But VGChartz' business model is problematic.
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Why would anyone kill you first of all? So long as folks are willing to debate civily and not base arguments entirely in rumor there should be no issue.
As for your argument, I think it is partially based on rumor. VGC most certainly is not 100% accurate as no tracking firm can claim to be. However it is using its own data and analyzing that data accordingly. When NPD was coming out it isn't as if ioi was taking their data and inputting it into his database. He was looking at it and saying "Hmm we are still a bit farther off than we would like to be..." and then he would make adjustments to HIS own data by refining his analysis.
That process is the EXACT same way that NPD would have refined their data against quarterly reports when they were not only starting out, but they probably still do it to this day so that they can update their analysis with changing trends and factors. The market doesn't stand still after all.
In this way from month to month ioi can check where his analysis is wrong and work towards a fairly good result. as TWRoO stated I am about 80% sure that ioi posted before NPD stated publically that they were pulling their data that he no longer planned to utilize their data since they had been proven fairly innacurate last quarter. Now I think he plans on using the quarterly data to fine tune his analysis and keep it on target from here on out.
To answer the question of "Where would VGC be without NPD data?", the answer is a lot further away from being accurate. And to that end VGC does owe a thanks to NPD, but that thanks is in the past now and they are no longer required to continue.
If you want to call it unfair that VGC was refining with NDP data that is probably true to some extent, but NPD made the choice to have their data public for that time period and the folks who do this here at VGC are not asking people to pay for the data they provide so I don't feel that it is really that unfair since VGC doesn't actually compete with NPD for anything but net credability and even then NPD shouldn't be concerned as it will not lose credability if VGC gains credability.
Ok well I have babbled long enough, hopefully that brings a few folks up to date on what has occured in the past. I would say to anyone lurking and reading this that instead of assuming things about the site just because someone said it you should ask here and get answers from respected posters. The next step is to check into the things you are told and not to just take our/my word for it.