During the month of May 2020, the Switch outsold the PlayStation 4 by 622,182 units for the month and the Xbox One by 1.33 million units. The PlayStation 4 outsold the Xbox One by 703,607 units.
When you compare monthly sales to a year ago, all three consoles are up. The Nintendo Switch is up 810,335 units (+90.81%), the PlayStation 4 is up 75,382 units (7.50%) and the Xbox One is up 156,143 units (70.73%).
source: gamezpot.com