I think “reversed” and “opposite” makes no sense here.
Librewolf copies the Torbrowser or Arkenfox patches, maybe adding their own ones, maybe not. Arkenfox is a 1:1 copy of Torbrowser to my knowledge, without using private browsing.
As you dont have Cookie Containers, the “being more private” or “anti fingerprinting” is a very vague statement. If you use your browser for a single website then yes maybe.