I'm no expert journalist, but I think VGChartz is going through some kind of crisis right now. Call it a man's intuition. People have been acting strange - myself included -. Too much bans, too much complains to the mods, yet too much threads/posts reporteds so that the mods ban the people behind those.
On top of that VGChartz still hasn't figured a way to to track digital games. But that's not important now.
Feel free to disagree with me in the comments.