I see your perspective, it's a truth that male didn't have a flexibility like the female. However, in terms of sport, I think power is also important because many of sport must use power to do activities more than flexibility. For example, some research of tennis, Venus Williams and Gilles Simon, a serving had been recorded out 207 km/h and 220 km/h in the order. The difference between two guys is height and weight. Venus Williams, she has a height and weight more than Gilles Simon, but the power to serve is lower. So the lady is good but has power lower.