I haven't read the whole book yet, so I can't summarize it accurately. But generally, it often involves complex characters, cultural exploration and certain historical backgrounds in the context of the story.
In RWBY fanfiction, the Weiss vs Winter fight can be a display of their different combat styles. Weiss is more about grace and precision with her Glyphs, while Winter, being more experienced, has a more refined and perhaps harsher style. Their fight could also explore their complex relationship as sisters.
One of the top stories was their intense rivalry. They had two very close and controversial fights. In their first encounter, the draw was a huge talking point as many thought Fury had done enough to win. Another story was their different fighting styles. Wilder with his powerful punches and Fury with his more technical and mobile approach.