Barozi said:

Really though it's just a bunch of people who wait for "official" numbers to arrive (which in the case of some games *cough* Halo and more may never happen) then make a comment and wait another month.

If it weren't for people who leak NPD numbers, the sales discussion there would've been dead a long time ago most likely.
Extrem limited informations about the US market, European market so the only thing that's left and worth discussing is the Japanese market.

It's easy to hate on other people's work and that is what happens here. Comparing the research of a single guy (or a small team) to the likes of NPD, Mediacreate or GFK and then expecting it to be on par with the others is just foolish.
For what it is VGC is an excellent place to get estimations from. Weekly hardware and software.

Why are you here, if you think the data is made up for fanboy arguments?

I never use VgChartz data as gospel. I count all the data on this site as estimates of estimates.

That's more right than you probably think. Even the official shipping-numbers are estimates. No, they don't count the exact number of devices that leaves the factory, don't count how many get lost or broken at transportation and similar stuff. The shipping number is never accurate. With data like MediaCreate and NPD it is more unreliable (aside from that we don't get exact NPD-numbers in the first place). See it as you wish, VGC is the best estimate for worldwide comparable numbers.