The only politcal thing or people being easier on Wonder Woman, I could think of, is this:
Remember when the Ghostbusters reboot came out along with haters and defenders. I'm not denying any misogynists exists, but there are those that take any criticism of that reboot as a raging, anti-women, sexist, misogynist bigots. Some people just don't like it or just don't find it funny. For Wonder Woman, some people felt critics are just trying to avoid being labelled. I don't know whether or not this is true. I'm not a mind reader or have a lasso of truth, so I just say is "People just have different opinions."
Look at Luke Skywalker and how his character changed. Naive rookie, jedi master, regretful hermit. Some people really don't like how they wrote him in the latest film. While some want him to stay the same hero, but older, some don't mind when character change and evolve, fall and rise again, as long as, deep down at their core, they are the same character. Like Superman and Batman being flawed, a newbie, or a turning to the dark side. It's easier to like Gal Gadot as Wonder Woman because we are seeing her at her best. For Superman and Batman, we have seen them at their best and their lowest. Rebooting a character can be tough. Screen writers want to show something new. Superman as a rookie, and Batman at his worst, and from that, they can grow, rise, and be better. Sometimes they are done well and show the hero as a three dimension human, but done poorly, it's character assassination. But as with Luke Skywalker, some people don't want to see their heroes like that. It's all just opinions.