Hendrix, Jimmy Page, Clapton, Wes Montgomer, Benson, Reinhardt were only humans who played guitar. But you can not use them as any example of how you should learned riffs, cords or any thing else and be just like them. Guitar Hero can only take you so far.
Same would apply using Ruhl, Arnold, Coleman or any other top BB'er as examples and trying to mimic how they trained ( or how you thought they trained after reading about them or watching video's of training sessions...... both have a good dose of BS in all of them). All theses folks are the special breed of humans, given the inner abilities to make the most of their muscle mass potentials. Most of these guy's get more out of 1 or 2 sets than normal trainee's get out of 10. Really are muscle building machines, pretty much whatever they may do in workouts. And with the extra chemical boost added, there seems to be no limit.
If someone say's that Yates, Coleman, Cutler or anyone else work's out this or that way and that you should, than be cautious. That can be a misleading example for the average lifter. Everyone has to find his own groove in building mass. Indeed, training is not rocket science. But anyone might hold the though of K.I.S.S. in mind when seeking success in BB'ing or any thing else. Good Luck.