Well I say it’s the spirit inside you that makes you strong…
Each of us is gifted with strength and determination and it need not be physical strength either…
I find that Women are more patient and much more organised than men, since I have taught fighting skills not just to men but Women also I doubt anyone can question the strength of Women as I have said many times it’s perfectly possible for a skilled and patient Woman of average build to take out a 300 pound hulk in a fight.
Now men are not always the dominant in every species and in many of Allah’s creations it’s the female that often tends the male and sometimes even eats him too 
However on the whole I think Men may well be physically stronger but Women too are gifted with strength though in a more subtle nature.
At the end of the day it’s a double edged sword and I feel both have thier own duties and specialities.