I actually watch the anime and I am half-ass reading the manga (because I don't want to spoil too much because I like watching the anime better), but I don't remember her doing anything impressive. I don't believe she has even had a proper fight. I remember she was fighting I guess evenly with Smoker. I thought she was just Crocodile level, but I'm seeing people say she is way better than Kuma, who I regard as very powerful, having his off spring nearly solo'ing the Straw Hat crew effortlessly. What am I missing? Someone enlighten me, I want to be in the know how. Why do you guys think she is so powerful?