Just had a quick look at the Game Database here, and there only 6 PS4 games sold above 10M, with 2 being Fifa and 2 being CoD. The other 2 are GTA 5 and Uncharted 4, which just made it (10.00M, and still marked as Uncharted (PS4) on the chart)
While probably a couple more made it, PS4 also has 5 times the Userbase and had 4 times as long to get there compared to the Switch, all while the Switch already has 3 games about to make that jump.
It also has a lot of games that are multiplatform, with XBox eating some sales. And, while it's not a 10 million seller, given how badly vgc is undertracking games like Horizon Zero Dawn, you have to wonder how many games are at or near PS4 only totals that high, but not tracked properly.