I think even 50m is too much for the Xbox ONE. I also doubt VGChartz's #s at 19 million. I think it's closer to 13-14 million right now.
Right now, its NA LTD is 11.1 million. If the Xbone really sold 19m units, that would mean only 58% of its sales come from NA, which doesn't sound right. It's more likely than the Xbone's sales are alot more towards NA than the previous generation, since the ROW, particularly Europe, all ditched the Xbox brand.
I also predict the ONE's sales to start declining drastically this year, as this looks like a very front-loaded console. The 360 didn't have generous price drops and bundles in the first few years and is still keeping neck-and-neck with XBONE sales in the same timeframe. The ONE will probably sell 30 million - 40 million at the end, but VGChartz will incorrectly put it at 70 million.
