arnold did NOT have a mediocre back. he had very low lats and plenty of back thickness and detail. his lats inserted lower than most pros today and were plenty thick.
arnold's weight was always changing; he actually lost weight(apparently) from his teens to his peak. supposedly he was 260 at 19-20 yrs old, and to me looked nothing less than 250 at any point, considering his height and fullness.
theres no question he was much larger than darrem, who is narrow and has narrow legs, no thicker of a torso or anything else than arnold including back.
I doubt Arnold was ever 260lbs. I heard or read somewhere he was around something like 220lbs at his best. The piece was comparing weights of yesteryear's bodybuilders' weights to current ones. Remebering his height, I know a guy who is about 6" who is not THAT far of Arnold's physique and he was around 105kgs which is about 230lbs.
Just found this on his site:
HOW TALL IS ARNOLD? WHAT WERE HIS MEASUREMENTS AT HIS PEAK?
According to his autobiography, ARNOLD: THE EDUCATION OF A BODYBUILDER, Arnold is 6'2", or 1.88 meters tall. His measurements at the peak of his career were;
Arms: 22 inches
Chest: 57 inches
Waist: 34 inches
Thighs: 28.5 inches
Calves: 20 inches
Weight: 235 pounds