March 2019 is the 25th month that the Nintendo Switch has been available for in the US. During the latest month the gap grew in favor of the combined sales of the 3DS and Wii U by 98,435 units when compared to the sales of the Switch during the same timeframe. In the last 12 months the gap has grown in favor of the Switch by 855,909 units. The Switch is currently ahead of the 3DS and Wii U by 165,192 units.
The 3DS launched in March 2011 and the Wii U launched in November 2012, while the Nintendo Switch launched in March 2017. The Switch has sold 11.52 million units, while the 3DS and Wii U have sold 11.36 million units during the same timeframe.