Some of these differences are fairly large. For example, in a study I published in 2000 examining the effect of affirmative action on police hiring, a comparison of male and female public safety officers found that female officers had 32 percent to 56 percent less upper-body strength and 18 percent to 45 percent less lower-body strength than male officers.
I belive that a woman could attain higher strength but that would mean that they would lose their "shape" and become "muscle", and they don't want that, plus they would have to work harder to stay in shape to get these jobs whereas now they just scream that it's unfair and sextist and the standards get reduced for them. Same goes for minorities, as they go "We don't know that, so make it easier for us" and poof!, it has been done!!