You can say anything you want about the theory, but there's a reason why they're theories. The fact of the matter is vgchartz's method of statistical estimation DOES NOT PRODUCE RESULTS IN LINE WITH REALITY. It happens over and over and over and over and over again. Is it because their methods are flawed? Is it because their implementation of the methods are flawed? It doesn't matter, that's their problem to deal with. All we care is do they produce accurate results and the answer is no.Strazdas said:Sigh, i typed a reply and then my browser decided to randomly go to some website because apperently i pressed soem shortcut. ill try again.Thanatos2k said:Statistical extrapolation is madness for video games though in most cases. For example, people can like one game in a series then utterly despise the next (see: Final Fantasy). Assassin's Creed 4 sold millions less than Assassin's Creed 3, but the extrapolations would have told you otherwise. Same thing with games of the same genre. How much would Kingdoms of Amalur sell? It's sort of like Skyrim and Fable AND multiplatform, so surely it would sell those numbers, right? (Actually, vgchartz grossly underestimated KoA sales back when it came out)
Thing is, the margin of error is just too large and the examples where vgchartz is off the mark by massive amounts too numerous for it to be useful here. THAT is why vgchartz is inaccurate and not to be used by anyone in any credible argument. An Atlus employee famously once came out and said vgchartz hadn't been close to the actual sales of ANY of their games.
No, that is false. Knowing something that is inaccurate can lead dumb people to draw bad conclusions. Saying "I don't know" is better than saying something with flawed data. Until a company releases numbers saying how much they sold, NO ONE knows how many copies any game sold anymore.VGC is the most accurate measure of sales we got available, and to dismiss it outright is simply stupid. Knowing that the sales is around number X is better than not knowing anything at all.
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It is quite clear that you do not know how statistics work.
Statistical extrapolation for sales is not madness. It is used by every statistical institution in the world. This is because exact data from all existing retailers is simply impossible.
Here is how it works: You take data from sources you have and then expand on it to fit all retailers (in this case). For example the methodology page shows that regions they have account for 70% of global sales. Then they extrapolate data from those countries to global using this assumption. As you already pointed out, if their assumtions are incorrect they adjust them as more data becomes available. However its worth noting that you should not mix the data publishers give with sales data. Publishers give data of items sold in their accouting sense. As in, wholesale sales. This however does not mean retail sales. all those items you see sitting on shelves, in storage and on the way - thats a discrepancy between the two. and if the game sells poorly but publisher printed many copies - thats going to be a large gap.
Statistical extrapolation has nothing to do with predicting sequel sales. Your example shows that you do not know what statistical extrapolation is as it has nothing to do with it.
An Atlus employee WOULDNT KNOW the actual sales of its games unless he did a specific investigation. that is because wholesale sales =/= retail sales. Thanks to NDA and secrecy in the industry most developers actually look at sites like VGC for data rather than get thier own. Weve seen developers that complain about Steam refusing to tell them how well their game sold even.
Also you keep talking about inaccuracies yet there are still no numerical examples or evidence from your side. For all i know you could be making it all up because you dislike the site.
And yes, knowing some data is better than knowing none. Otherwise you would still be living in a cave hunting animals with a rock.
So any sane person would conclude that vgchartz is therefore not to be trusted.
And yes, an Atlus employee is the only one who can produce an accurate count of sales, because they have all the data. You kidding?
Digital distribution however is different. Digital distribution sales figures can be obscured depending on which company you're talking about. Some companies don't share the numbers. Some companies share the numbers with developers but prohibit them from sharing those numbers with anyone else. It's different across the board on a case by case basis.
But vgchartz (or the NPD) doesn't count digital sales, cannot count digital sales, and never has. So that's irrelevant to this discussion. The Atlus employee was talking about physical hard copies, and the statement was made before console game digital distribution was even a thing.