https://www.theverge.com/circuitbreaker/2018/5/10/17339012/playstation-4-vs-xbox-one-sales-ea-microsoft-sony-ps4

Microsoft hasn’t disclosed sales numbers for its Xbox One console since 2015, but an EA executive let slip a solid data point for the publisher’s current install base — and it’s not hard to do the math and calculate the breakdown based on what he said. As Variety reports, EA CFO Blake Jorgensen said that the company had a “current generation” install base of 103 million at the end of 2017.

At the start of this year, Sony said “the PS4 has now cumulatively sold through more than 73.6 million units globally.” So that leaves around 29.4 million Xbox One consoles to fill out the remainder. And you’ve got to factor in some Nintendo Switch units in there too, even if FIFA 18 is the only title that EA produced for the console last year.