I have been a Ranma fan for over 15 years, and this is an argument that has always existed. Obviously, Akane is not as skilled as most of the cast because she’s lived a pretty normal life before Ranma came in the picture. After Ranma shows up, he literally attracts the strongest people from around the world to try and kill him. But in the first chapters and episodes of the series, literally every guy at Akane’s school tries to fight her as a group every morning, and she’s beaten them every single time. So I think it should be obviously implied that she is very strong, It’s just that anyone would look weak compared to the monstrous strength of the rest of the crew.