"genetic T levels"
first of all, no one in these sports, no one, aside from the very stupid and naive, is natural. They all use steroids. So "natural T levels" is completely moot.
secondly, if you really believe THEIR bullshit about being genetically gifted, you're as naive as the ones who stay natty. Some of the biggest most jacked guys in the world right now had absolutely SHIT genetics for muscle building. Just take a look at the teenage pictures of instagram darlings like calum von moger, skinny twink with completely unremarkable structure as youth. Give that same kid 5 grams of testosterone a week, assorted other compounds, thousands of dollars worth of HGH and regular insulin abuse, and voila you have a "pro"
Powerlifters are just guys who started out wanting to be bodybuilders and then couldnt stop shoving shit in their mouths. All the guys in the image you just posted would look jacked if they actually committed to cutting for 3-6 months. They cant though, because powerlifter is a euphemism for addicted to food.