I sense some bitter sarcasm. Perhaps you can educate us as to who had better overall leg development during his 1970-75 era?
The Oak is the finest example of bodybuilding ever. Sans drugs I would say Reeves and Park but otherwise, Arnold is Numero Uno.
Symmetry? Arms, neck and calves should be as close in measurement to one another as possible. Chest and the combined measurement of both thighs should be equal. Arnold had a 57" chest and 28.5" thighs. His arms were 22.5" and his calves 20" (I don't know about his neck measurement) and his waist was 34".
"Massthetics" at their finest.