I think he was just below the normal range and with supplements he moved to the high end of the normal range
This is the question that will get really interesting as athletic performance and training becomes more scientific and our understanding increases. Are the lower-range athletes just supposed to accept that another group of people who got lucky with genetics have a significant advantage in performance? Especially if there is an easy supplement you can take that would “even the playing table” in testable numbers?
Look at this forum and find all the things people will try anything for the smallest advantages, maximizing carb intake through the perfect ratio, saving a watt with an aero helmet, grams here and there, perfect course recon. As we get further away from the obviously doped-up tours and extreme bodybuilding eras and have a further understanding of the body, managing hormone levels could become pretty mainstream.