10.8 nintendo switch were shipped last Q3. Majority was sold in last 6 weeks of the last year.
This year switch is trending higher than last year.
In order to PS5 treat it, it have to double PS4 holiday launch. Series X has to triple One. Switch is easily the safest bet.

Update: In the end, Switch won against it's fellow 9th gen consoles.

For the data and all these things, refer to this thread:

https://gamrconnect.vgchartz.com/thread/244146/december-npd-2020-switch-21-million-ps5-800k-xbs-700k/

I know that data regards only to December numbers, but Switch lead is so massive that November probably hardly matters, and the november data should be easy enough to find.

Yay! The Switch continues to be the hottest thing in the planet!

In all honesty, this should have been a lot more obvious than 48 people thought.