Sometimes, one of the twins monopolizes nutrition in the womb, so even twins, born on the same day, can have very different weights at birth. I think smoke and stack were just like that.
I think stack was not different from the premature baby when they were born. He must've been quite light-weighted and scrawny until the "the moores" puberty hits. That's why their mf father(may he rot in hell) picked him out to abuse, that's why smoke acts like he is his older brother at least 5 years apart... in smoke's eyes, stack is still a boy that is smaller and weaker than him, who he must protect from this cruel world....













