Impressive numbers. I am really excited to see PS4 vs. Switch this year.
As many people here said before: if Sony drops prices again and hits the shelves with attractive bundles throug the year, especially in the Holiday Season '18, I'd really dare to bet PS4 beating 100 million consoles sold by 31th December, 2018. What is actually my official bet for this year.
On a sidenote, it's a bit tragic to see that Microsoft totally lost it this generation. A strong competition on a same level between Sony and Microsoft would have been staggering.