I don't know what Favreau was smoking when he wrote this lazy ass episode, but he needs to put that shit in the trash, lol. This is one of the oldest
tropes in television.
Also, I get that the ufc chick is strong and whatever, but there is no way he should have gotten his ass beat like that. She's just a shocktrooper, Mando was trained in fighting since he was a child, not to mention he had a full set of beskar on. She beat him like he forgot to take the chicken out of the freezer, lol.
She could have been born on a planet with higher gravity or had cybernetics or something, but there needed to be an explanation, not just "STRONG WOMAN IS STRONG".