Let's not forget that Branch holds back on his leg training. Sometimes not training legs for months, In order to keep upper and lower body balance. Imagine If he let it all go and said f**k It I'm going to train my legs as hard as i can and let them just be freakish !! He said his legs grow just walking up the stairs. I think he would be among the top of that list if he just went nuts and said to hell with symmetry.
i think that if you have a freak part on level of branch's legs, then you should go ahead and just take that part to the limit regardless of whether it creates an imbalance. if your structure is a certain way, you are not ever really going to change it. branch's arms will never be at the level of his legs. ronnie's calves will never match his quads. ruhl's tris will never match his bi's....
branch should go all out and shoot for the craziest legs ever, i think it would help him in the long run if anything. another guy who i think could have been a leg freak if he went for it instead of balance is shawn ray.