That would be true if everything stays at the current speed.
But while Switch should accelerate during Summer and boost in Fall with all the announced game releases during that period, and then go into overdrive during the holiday season with Pokemon and probably Animal Crossing this year, PS4 will mostly slowly slide down in sales, even with a 50$ pricecut, and just boost a lot for Black Friday.
In the end, the difference should be more around 5M, if not even more than that.
A permenent price cut around the world would do wonders for the ps4.
Its selling so well without a price cut.
It would sell way more with a price cut .
I still believe ps4 will be behind switch by 2 million at best.