Black Widow vs. Catwoman

Battle in a back-alley strip club.  Who wins? 

Black Widow created to kill.

Catwoman created to play
.
who wins?

The black widow takes the win for a serious battle.

Black Widow.CURBSTOMP

Yeah this is a mismatch.

Black Widow, very fast.

Black Widow, easily.

" Black Widow will kill Catwoman
"

Black Widow, for a fact that she has weapons at her disposal and Catwoman doesn't have long range attacks.
 
but on a hand2hand combat, Black Widow is still a human while Catwoman is a mutant with hyperkeen senses and definitely faster, so Catwoman will win.

BW

Black widow curbstomps

Natasha is superior in everyway although Selena is no slouch

Natasha shoots her

Black Widow beats her.