This follow the bell curve. There are more men at the high points on both ends of the curve while women tend to follow a smoother curve. Take intelligence - there are more male geniuses and also more morons, idiots, pyschopaths than female. But in general women score better...men tend to the highest highs and the lowest lows. This “rule” is true across the board (with the occasional exception.)
A noted bridge player was asked once who were the better players: men or women. He replied, “Women are better but men are best.”
I take it that he hasn't met my EX!