>>106315303They're literally the exact same character, but Black Cat is ultimately better because she gets to play off of a better romantic foil.
Every Batman/Catwoman encounter is basically the same. Batman bumps into Catwoman on a rooftop, Catwoman flirts with Batman for a little while before spilling whatever information is necessary for the story to continue, and then she distracts Batman somehow before running off while making Daffy Duck noises. Batman, for his part, never reacts to any of this. He always just stands there with his cape flowing around him, thinking about crime and justice and his dead parents.
Spiderman, on the other hand, is an actual fucking person. He reacts to Black Cat and takes her seriously. In fact, one of the most interesting parts of their dynamic is that he takes their relationship way more seriously than she does.
In the earlier comics, there's this one scene where Spiderman takes off his mask and proposes marriage to Black Cat. She responds to this by dropping the flirty cat act, sobering up, and telling Peter to put his mask back on. You'd never see that kind of reaction from Catwoman. Catwoman wouldn't be able to drop the flirty cat act, because the flirty cat act is literally all she is
In other words, they might both be clawed, whip-wielding, leather-wearing, cat-themed cat burglars, but Black Cat is better because her relationship with Spiderman is more interesting. Batman is a one-note scowling statue, and Peter Parker is an actual hormonal teenager. You do the math.