You may not know it (yet), but IGN is a very biased site, that site made itself a big name with their own hands, but later fell for the cheap PS2`s money trap and got discovered in the last generation.
They said everything, they blamed everone, everyone said everything, but at the end NO BODY DID ANYTHING.
I dont know if VGChartz is / will-ever-be in the same situation, but as soon as you grow, all those lazy companies just try to buy good rates instead of make good games worth of them.