On Librewolf i got 16.48 bits of information, on TOR browser 10.32 bits, but on Tails I managed to get only 9.3 bits.
Not what I meant: https://github.com/arkenfox/user.js/wiki/3.3-Overrides-[To-RFP-or-Not]#-fingerprinting
"If you do nothing on desktop, you are already uniquely identifiable - screen, window and font metrics alone are probably enough - add timezone name, preferred languages, and several dozen other metrics and it is game over. Here is a link to the results of a study done in 2016 showing a 99.24% unique hit rate (and that is excluding IP addresses).
Changing a few prefs from default is not going to make you “more unique” - there is no such thing."
Basically making yourself less unique is impossible so there’s no sensible tradeoff to be made (other than in the context of Tor and Mullvad Browser).