Xbox ONE is too damn high and way overtracked.
There is no way this console is over 16 million sold, let alone 20 million. sold.
The reason MS doesn't say anything about VGChart'z guesstimations is because their estimates look better than actual sales. You can bet that if the Xbone has sold even 1 unit higher than VGChartz's estimates, MS would at least acknowledge that VGC's numbers are inaccurate and they sold more units than what VGC estimates.
Their silence only leads me to believe the VGC is significantly overtracking the Xbone.
Well, we have Xbox One, with over 11-12 Millions on USA, according to NPD, with over 2.5 Millions on UK, over 1 Million on France, and Germany, 60 Thousands on Japan, so we have over 16.5 Millions confirmed for Xbox One, on the World's Biggest Markets, i would love to know Latin America's Numbers, Brazil's Best selling Home console via Official sources is Master System, more than 5 Millions of Units Sold, and Mexico, also is a big Market, i believe that a 18-20 Millions Worldwide is the Number for Xbox One now.