>>112073978Frozen had Elsa perform the inciting action of running away. The spirits decided for Elsa to go on an adventure. Anna is the one to recognize Mattias & convinced him to let down his guard. Anna destroyed the dam. Anna gets the guy & the crown in the end.
Simply put, there is no reason for Kristen Bell to get top billing other than being the star. Elsa got shafted from being the star in her story again to make room for her sped sister who needs to constantly be seen as an equal when everybody knows she is nowhere near Elsa in prominence.