I'm the site's Assistant PR Manager, and hopefully I can clarify this a little bit. As has been mentioned it is available in the gamrReview portion of the VGChartz Network. We plan to integrate it into the main network as soon as possible. As this is the first of the next generation of game devices, the logistics of things like how we will display its sales data in comparison to other systems, its games' entries in the database, etc., are still being worked on. Please be patient--we will absolutely have everything ready by the time the system launches.
By the way, gamrReview may have even more content on the 3DS in the coming weeks--I am in discussion with Nintendo on getting us prerelease units and games to review for the middle of next month, so please look forward to it! :)
