Yea, Nawaki wasn't lucky enuff to get the limit or if he did, he was just genin level, and even if u have a limit it doesn't matter if ur just a genin and if ur fighting a jounin or something. He could have fought someone with long range attacks for example and been owned.

As for her just being an extreme case, I don't think thats true cos being extremely strong means something like being able smash someone's face with a couple of blows, and not being able to crack a street apart with one finger.