Lol, the back width of the gorilla in the first video I posted is just RI-DUN-KU-LOUS. Literally three times the width of Ronnie's back in his prime. I guestimate this gorilla to weight around 550 lbs
The back muscle mass, coupled with it's muscle density and superior functional efficiency(compared to human muscles) indicates this gorilla would be able to deadlift a bar with vans at each end of the bar. The reason why it can't is because of it's short legs with long arms, which would make it impossible for it to perform a deadlift. But it certainly has the strength to do it.
SUCKMYMUSCLE