I agree on this, also on the fact that I know people with 3 grams of testosterone with regional men's physique muscles; the main factor is genetics; as i also know in poland guys who weigh 110 Kg with only 500mg of textin other words, high testosterone does not mean high libido - if prolactin is elevated, there are not enough neurosteroids and\or dopamine, then even if you skyrocket your testosterone, this will not help, sir!
FIRST OF ALL GENETICS, TRAINING AND DIET, AND THEN STEROIDS