first time I did bench press I was 15,at Tiger Line gym,Naples,Italy,I used 50kg/110kg for reps,at 17y s I was using 70/80kg (180lb),same gym.
from 17 to 18ys of age my strenght went up considerably,very probably because i started to hit the gym more seriously and because my body become full of hairs with gorilla voice LOL
at 15 my bw was 165,at 19 200lb,don't think that the gym was related into bw gains,just genetic (age,from boy to man?)...
there are many variables in hittin decent numbers on big 3 but -again- how it is related to bb???
I could understand that strenght is related to sports (football,rugby,PL,etc etc) but we are on a bbing forum so it's a matter of how much stress you put on fibers NOT how much you lift.