I always loved this one the most, because out of all the examples we have of females with unchecked power throughout history, they every single time behave no different from men did. All the way back to Hatshepsut of Ancient Egypt, who pillaged and destroyed along the west Arabian peninsula to fund her construction projects. From the sick fuck Empresses of ancient China, to Bloody Mary Tutor in England who burned more people at the stake than the rest of Europe, they all fell victim to power.(Power corrupts absolutely and absolute power corrupts). Many of these women behaved as badly as some of the worst roman Emperors in some ways.
In society today, where is the evidence that females are better leaders? In the military I've seen some great female leaders, none of which were the greatest I've seen, and they often suck badly.