The last few weeks PS4 will manage to stay close to Switch.
Yeah I expect they will stay relatively close until the 20th when the Lite launches, no big system-selling games between now and then to my knowledge, plus a lot of people will be holding off on getting a Switch til the revision hits.
In 3 weeks the Switch will activate war mode with Switch Lite, 2D Zelda, Luigis Mansion and Pokemon coming in November. PS4 won't have a chance YOY, even with Death Stranding. But yes, still impressive PS4 sales...
Don't forget Dragon Quest 11, that could be heavy hitter in Japan.
Ps4 still doing strong, If we think the ps5 is on the horizon
I don't think PS5 is having a real effect on PS4 sales yet; it's still well over a year away and hasn't been properly revealed.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.