So, ignoring the weight, loss of strength, fast versus slow twitch, height, hand-eye coordination, VO2max differences, and so on. You are suggesting that as a man, having a twin sister, that you would not have a higher muscle & bone density than she has at age (say) 30?
To hedge on this, I will say this. I believe that you are moving on to the follow-up question if we were to agree that the answer is actually yes. Specifically, my follow-up question would be this:
Given than initial starting point of being stronger than said twin sister, does the 25% loss in strength, coupled with the additional physical hurdles you face, counter that initial starting point? If so, how much? 100%? Less than 100%? More than 100%?
Add-on to that? Do you think that any physical advantage (as stated above) is really in league with the same advantage that someone with a better VO2max might have, or a fast-twitch loaded racer on cross race day, or a tall guy in the NBA, etc?