Both are based on an animal
Both have claws
Both have infinite “thing from the past that came back to haunt you” every time they get a solo
Both get away with more than they should
Both ride motorcycles
Both wear tight costumes
Both have most of their past friends killed
Both took multiple identities
Both travelled around the world
Both have tons of sexual tension with anyone they interact with (above the legal age)
Both have ships hated in the fandom involving a character that they knew when they were a minor
Both are hot
Proof that Selina is DC’s Logan