This recent article by Minerva-funded researcher, Dr. Leah Windsor and colleagues explore the idea that women world leaders are doing better (i.e., fewer deaths in the countries they lead) than men world leaders. They show that in aggregate, women and men leaders do about the same - that women world leaders do not fare significantly better. However, the role of country culture is quite important: countries with more egalitarian social cultures have fewer deaths, and those with women leaders have even fewer.
Link: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0244531