Complex sentence: As one of the heirs of the Anything Goes Martial Arts School, Akane is in good fighting form, and has excellent physical strength and agility, although she doesn't know enough to use her style as efficiently as Ranma.
Split into simpler sentences: As one of the heirs of the Anything Goes Martial Arts School, Akane is a very good fighter and has excellent physical strength and agility. She's been shown as extremely talented but thus far doesn't know enough to use her style as efficiently as Ranma.