You keep mixing between correlation and causation, and stop being an anon coward.
Genetics absolutely plays a huge roll in determining height and ability to put on muscle, as does gender. However, environmental factors determine what and how genetics express. A male with poor nutrition and little exercise will pale in strength versus a woman into exercise who takes steroids. Yes, there are huge bell curve differences between men and women, but then men and women have massive genetic differences. You know who doesn't have massive genetic differences? People of different races. Sure, there are differences in ankle size that allow a certain tribe in Kenya to produce world class long distance runners, but that's not a racial trait. That's a trait within a tiny culture, and that culture has had a huge push to develop runners. I'm sure if you looked around, you could find some area of relatively inbred white people or Asian people with similar ankles, and if they had a running development program, they'd probably do pretty well. Genetic expression is mostly hyper local, to an individual and maybe to a community, not to a race. Looking at black faces, you will see a huge variety, just as you will see in white faces. The differences across race are minuscule.
The tallest white men tend to pursue business and other fields, even when they play sports. The tallest black men tend to get pushed into sports. Ask a tall black men how often they get asked if they play basketball. It's all the fucking time. Ask a tall white man the same, and they'll say it happens, but not nearly as often.