Arnold was strong as fuck in his early years ..Typical get big bullshit

When he came to the USA he thought you turn up big you win the show , but he learnt a lesson from a much more ripped frank zane who handed Arnold one of his last defeats..
He had enough mass when he arrived in the States so went about "refining" what he had all ready built..
He competed in powerlifting when he was younger and won comps So I doubt he was "weak"
He also used to wear out training partners , not cos he used to fuck there GFs

but his mental drive was unmatched so he used to just burn them out.
I wouldnt use pumping iron as a tool to gauge how Arnold trained , most of that was all staged for the camera..
Arnold and the guys from that era also trained much harder than the guys do today..
Can you imagine the guys today trying to do 30 - 60 sets per bodypart 2 - 3 times a week?
It would kill them , alot of them now get out of breath just walking
