B-boy will answer humbly (he's already done so) that he estimates that his genetics are slightly better than average but not close to Phil & Ronnies. When looking objectively at population averages you must think in terms of the normal distribution, or bell curve. Now as objectively as I might: b-boy's genetic potential (basically, what I would call his androgen capacity-resilience, and, hypertrophic potential; training; and nutrition) combined yielded a product (his physique) that in terms of his androgen-capacity resilience (things like his Esterase, Aromatase, CYP2C9 expression, etc.) and hypertrophic potential (things like satellite cell regenerative capacity, attributable to NO, IL-6, and Notch signaling) [together, "Genetics"], combined with his nutrition and training, that were so on point especially in his prime so as to provide the requisite building blocks for muscle (while mitigating excess body fat [macronutrients]) and provided at a near-optimal stimulus in terms of stress & recovery. All of these factors combined are necessary for becoming an IFBB pro. I note that training knowledge has only recently come into its own where as a rule I'd say most attentive/obsessed gym rats are probably training near-optimally; this might not have been so even 10 years ago. It would have been more challenging for him in regards to training optimally, but possible.
By all objective metrics, b-boy's genetics in terms of androgen capacity-resilience & hypertrophic potential are certainly several standard deviations above the norm. Now, Phil & Ronnie might be 2-3 standard deviations above b-boy's in these terms, but that doesn't arise as a tremendous absolute differences in skeletal muscle (leaving out the "intangibles") between them. But whereas Phil & Ronnie might be 11 standard deviations above the norm, perhaps b-boy is 7-8. That's a lot.
This board already selects for those above the norm. While perhaps most guys on this board are a couple standard deviations above the norm, the pros are the outliers and, rarely, even the extreme outliers.
This board is a testament to the power of genetics as well as drugs, why I love it.