Structure , proportions , where the muscle is placed , Reeves had unaturally small waist & hips and wide calvicles this is very desirable for a bodybuilder he had a 29" waist at 6'1" and 215 pounds
Thats exactly right ND, steve had very small hips and waist for a big man back in the 1940s-50s, his calvicles were wide, and every muscle was in Proportion with the other, nothing over powered the over, the closest ive seen to Steve in a modern day sence was Bob Paris in 1982-83.