MoonSong
Rules-lawyering drama queen but not a munchkin
Well, if I look to Olympic games, I don't see any case where women excel at physical attributes more than men.
Strength is obvious: weightlifting or hammer throwing.
Dexterity: sports where coordination, aim or quickness are the main attribute. Men win in diving, sharpshooting, and table tennis for example.
Constitution: Men win in Marathon. They also win in sports where "hit points" are used, like boxing.
So I don't see how that would go with anything but a -2 to all physical stats for females (or +2 for males), if you try to make an extreme simulationist game. I agree it's not worth bother with it, but if you would do, from a simulation point of view, females would be very underpowered in physical stats. Which is dumb from a balance point of view, and from narrativist point of view (Red Sonja should be as capable as Conan)
[Warning, pointless uselees childish arguing ahead]
I think your examples are biased, and most of those are actually consecuences of strength rather than the other stats. Actually if gender modifiers existed, women would be overpowered:
Strength: yes, the only one where males win, no arguing
Dexterity: many of your examples relly on strength, (shooting with a bow requires strength, so does shooting with a gun or rifle in order to counter the ricochet and it requires spatial coordination, something men's brains are better at). Actually, only because of smaller hands and bodies and lower center of gravity women are more agile and quicker.
Constitution: your marathon example is flawed, again it all comes to more strength. But if anything historically women have been longer lived despite having suffered from worse nutrition than men in many cases. Talk about endurance.
Int. this point is better left alone
Wis: Women have better peripheral vision on average, and are more perceptive and sensitive, not to mention are less susceptible to fits of rage, that sure warrants a wis bonus
Cha: this is also best left alone
[Back to totally serious posting]
But anyway that is silly, humans shouldn't have any racial/gender bonus at all (or have a bonus to any stat only, though that is already pushing it). That would only bring needless unfortunate chauvinistic and racist implications, no please no. Specially because HUMANS ARE THE BASELINE, if people were more receptive of racial penalties we wouldn't need to have this conversation in first place, bring back negative racial modiffiers, a PC with more than one low stat ought to be viable. (And yes I don't only strongly dislike the current human bonuses, I truly hate them)
And I find it quite sad that what little had remained cosntant about humans in 3e and 4e (bonus feat and skill) has been entirely thrown out the window (maybe allow to pick and extra ability to use skill dice in the basic game and an extra background in the standard game? with the option of an extra feat is specialties are in?). Understand that what they attempt is simple, but it feels entirely wrong, that is no human, that is a kryptonian, or a demigod, or a saiyan, or atlantean, or a metahuman, or whatever you fancy, but human? no, not by any measure.