Here is an interesting site if you are trying to find out what your genetic drug free muscular potential is.
http://www.smartbodybuilding.net/miscellaneous/references/maximum_measurements.htm
It seems more valid than some of the other computations that rely on just a wrist measurement.
no calculation can give you a definitive answer. with the improvements that we have made and continue to make in training/nutrition, and supplementation, that potential keeps growing.
Interesting. However I think he is a bit off with a few of Bill Pearls measurements. 
Yeah, I was just going to say that same thing. It’s an interesting formula, but as I recall Pearl competed at a contest BW of about 240, not 201. [Laughs hysterically]
Don’t know about the other bber’s measurements.