You are not missing out on much. This movie is like a watered-down version of "Save The Last Dance" which has a sweet love story where the relationship has good quality; Unlike this film.
SPOILER ALERT: In this movie, the main character Amalie is a terrible person. Amalie cheats on her boyfriend who cares about her for a guy who embarrassed her in a nightclub. She also lies constantly, and although you can understand where she is coming from, at some point it becomes a bit irritating.
Amalie's actions are so unlikable that I couldn't enjoy this movie. IMHO, I rate Battle a 4/10. I would not recommend watching Battle unless you happen to really love dance films.