What's really impressive is the Switch achieving these numbers while competing with the 3DS and Nintendo's mini-console offerings, not to mention the PS4/XBO variants that exist that contribute to their respective sales numbers.
"I think ps4 is sold to costumers and switch shipped"
What makes you think this?
Well, Sony's statement like a week ago was 18 million sold to costumers in 2018 (today we got the shipped which were less than 18 million, like 17.7 for the year). I had the feeling Nintendo numbers were shipped since they always are (we also got news about sold to costumers was something like over 30 by the end of january)
Nintendo president Shuntaro Furukawa announced worldwide sell-through sales of the Nintendo Switch has surpassed 30 million units by the end of January. So :
- 14.86 million units of the Nintendo Switch shipped as of december 31, 2017.
- 32.27 million units of the Nintendo Switch shipped as of December 31, 2018.
- More than 30 million units of the Nintendo Switch sold as of January 31, 2019.
So over the calendar year 2018 :
Nintendo delivered 17.41 million distributed consoles and sold less than 17 million consoles to consumers.