December 2017 is the 10th month that the Nintendo Switch has been available for. During the latest month the gap grew in favor of the Switch by 4.30 million units when compared to the Xbox One during the same timeframe. The Switch is currently ahead of the Xbox One by 8.12 million units.
The Xbox One launched in November 2013, while the Nintendo Switch launched worldwide in March 2017. The Switch has sold 13.36 million units, while the Xbox One sold 5.24 million units during the same timeframe.