wouldn't say Piano is inferior genetically. Just older and fucked himself up with oils and pmma.
he looked good when younger and just on alot of roids

Structurally, he has smallish arms for his height and they lacked detail and a wide waist.
Kali lacks the ability to get shredded, he has that thick skin, but vascular look. And structurally has the small waist, big arms, big chest, good back, and big legs.