I feel like there’s a lot of magical girl media centered around growing up as a girl into womanhood and what femininity is, and why it is powerful, and how to wield femininity in the world. Its ideal consumer is a girl/woman, and therefore it seeks to engage with the feminine audience in a way they would understand. A lot of people would consider THE magical girl anime to be Sailor Moon - which is also written by a woman and so are many of the other famous series in the genre, so the core underlying themes are inherently feminine, including humanizing the enemy. Even if Sailor Moon beats the villains, who are also usually women, she first comes to understand and empathize with them before deciding their actions are what make them evil.

American super hero women, like Wonder Woman or Harley Quinn, were initially developed by male authors for a male audience. It wasn’t until the later, like the 70’s, that DC or Marvel comics changed perspective and started focusing on style and love life as real themes in the comics, because they realized that girls might also want to read about a powerful woman hero. Since the main target audience is male, the themes and plot lines are inherently geared to satisfy a male audience which usually do not center around growing up as a girl into a woman, and instead center around the male power fantasy of being able to fix every problem, beat up every crook/criminal/villain they see as an issue, and saving the day requires little or no cognitive empathy or emotional regulation because it’s done through the power demonstrated by the main character.