Are women better in politics?

[Tiberius]

The entire question is flawed. The president (or prime minister, or whatever) is not the only controlling factor in a country's government. In all the countries you mentioned, there are elected parliaments who make the decisions. Whether or not there is a woman in the top position is largely irrelevant. I'd wager that the majority of the parliament is still made up of men. That isn't to say men are better in politics; it just means we can't make a very good analysis of how good genders are based on your "evidence" alone. Indeed, I can name a few female politicians who were awful in power.