NEWSFLASH: Men Are Stronger Than Women (On Average).
I saw an article which quantifies the difference in concrete ways. To be honest the difference shocked me. The paper is Hand-grip strength of young men, women and highly trained female athletes [PDF]. As you can see in the figure above the sample sizes are large. The N = 60 of top female athletes consisted of those who competed in judo and handball, to select for individuals who were already geared toward upper body activities. The very weakest male in the data set of nearly 1,700 males looks to be about at the 20th percentile for average women. . . .
Ten percent of women have stronger grips than the bottom five percent of men. The difference in distributions is big enough that the very strongest non-elite athlete female in the whole data set has a weaker grip than most of the men.
At this point the intelligent obscurantist will probably make an appeal to something about a confound. But the researchers had a data set of men and women in their early 20s, of a wide range of body types. To the right you see a plot of average grip strength as a function of lean body mass. The further to the right, the more muscular the individuals are. As you can see the more muscular men and women are, the stronger they are. But you can also observe that even the most muscular women can barely beat the least muscular men.
See also the earlier comparison here regarding track and field:
These two links show two sets of track and field records. This one is for female world record holders and this one is for U.S. amateur high school boys.
The boys win in every category… by a wide margin. And those are just high-school age male children in one country that has about 5% of the world’s population, compared to the best adult female athletes in the entire world.