HEATH and LEVRONE look big standing alone because of their narrowness, but next to coleman thei are TWO steps behind (not to say look really small)
Coleman s arms at 290lbs must be 2-3inch bigger at least than heath an levrone at their max. 240lbs
same with levrones so called best shoulders
coleman s are twice as big
whilst your method has some merit for gauging something interesting, why not prove it?
there appears to be some 12% difference in the 2 dimensional width of the arms in those comparison pics, but there's nothing accounting for thickness...so its not conclusive.
still, IF the thicknesses were the same in proportion, then coleman's arm is 12% greater in diameter than levrone's. IF coleman's arm is 23" then, assuming a perfect circle to represent the arm, and we all remember our circle formula, then coleman's arm at 23" = pi * D. So D- for this analysis is 7.3". Now we know D, then levrone's is 0.88* 7.3" = 6.44". Which means that Levrone's circumference is 20.5"
of more interest is the ratio of arm size to height... smaller absolute arm measurement looks more impressive on shorter guys. , lets say, coleman at 6' tall- or whatever he is, sports 23" guns. thats 0.32" or arm per inch of height. Lee Priest's 21"arms at 5'3" is 0.33" of arm per inch of height..and they look massive!
im not trying to get the exact numbers for these..just trying to make a point. as the arm to height measurement is such small numbers, three digits is going to be required.