The PlayStation 4 was the best-selling console in the United States during January 2017, according to the NPD Group, which tracks sales domestically.
Sony's console was also the No. 1 console in the US during December, though the Xbox One ended the year as the best-selling console for the second half of 2016.
In its own statement, Microsoft said 2017 is off to a "strong start" for the Xbox One as the number of hours players spent playing games on the console grew 21 percent year-over-year. Additionally, Xbox One sales grew year-over-year in January, something that cannot be said for the PS4, according to Microsoft.
A week from today, the NPD Group will announce the top-selling games for January 2017. We'll report back with more details as they become available.
http://www.gamespot.com/articles/ps4-tops-january-2017-us-sales/1100-6447726/
How much growth MS?