m0useanswered grow question 2 hours ago Its mostly down to genetics and some environmentals. Eg light density and CO2 levels. But mostly its all down to genetics.
Not all seeds/strains are winners, most are average, some below, and the rare bits are really above it all, its why some of the best stuff is clone only as its not always the same in seeds. Seeds are sisters and brothers, and look at family's not all brother and sister looks the same or achieve the same results in life. Same as seeds.