This is true. People believe in gender stereotypes, creating social normalizations that effect the ability of both men and women. I realize that most of the information given above is about the average male and the average female. There are going to be exceptions to every case. Occasionally a woman is going to be better than a man at a sport, or they are going to be bigger than a man, but if you take the fastest man and the fastest women, the man would win the race.
Proof is the Olympics.
When the most athletic people in the world come together for competition, there are separate divisions for men and women because they are not equal. In no way am I trying to say that one sex is better than the other. We are different and should concentrate on our strengths instead of wasting time and effort trying to accomplish equality when it can never happen. We are physically different and society would not allow it. We need to accept this truth that men and women are different and work to be better because of it.