You can tell how few women there still are at the top of public service because they all get compared to one another. David Cameron was never described as a second John Major just because they both have balls, and it should be equally laughable to describe Theresa May as a second Margaret Thatcher.
More information: https://www.theguardian.com/society/2016/jul/19/too-few-women-at-top-female-leaders