Women are more inclined to be mentally and emotionally stable while men are typically physically stronger. In an instinctual perspective, woman reproduce, while men are meant to protect them while they are pregnant. Giving them the need to be more physically capable of defending the "nest". However being male or female doesn't always determine strengths and weaknesses. It depends on what you work on as an individual. I've met tons of women that could beat the crap out of a lot of men if they had to. That's what's so beautiful about being human, we don't always have to follow our nature.
I think in physical term most men are stronger then women but there are exceptions to every rule, but in my personal opinion, even though I tease and harassall my female friends, women are truly the strongest, im not pushing no nine pound anything out of any part of my body, ever