That study has nothing to do with your claim, that an african man can have an amount close to Jones when he popped. Its about white american men and chinese men from China (HK). It has nothing to do with your claim, its cool you competed in Gymnastics but you obviously never been involved at an higher level in academia. Because they would tear your claim to shreds, especially since you have not supplied a study that strenghtens your claim. If your claim was White men in America carry a slightly bigger amount of total Testosterone than chinese men in Hongkong (I think like 2 points or whatever it was in the study you linked, but the difference in free and bioavaible testosterone was virtually identical.
https://www.researchgate.net/public...le_contributor_to_group_differences_in_health
This would have been a study that actually deals with your claim but if you take a look at it it doesn't really fit in with your claim. That is my 2 cents to that.