NPD is a good service. The advantage with VCchartz is it is worldwide and weekly. NPD only covers the US. Second, we get to see data on more games instead of just the top 20 or so. Don't forget that Famitsu and Meadia Create are off from eachother too.
NPD may be more accurate, but slower and costs lots of money to get all the data. It is a good source for a business though. VGchartz is a good source as well. They are not mutually exclusive. Business likes having more information from more than one place.
Now Playing: The Witcher (PC)
Consoles Owned: NES, SNES, N64, PS1, PS2, Wii, Xbox 360, Game Boy, DS







