Quote:
Originally Posted by
thekunk07 
well, it's not that simple for some reason. i bench 405 (lost some strength due to bw/fat/size loss) but 560 on an HS machine. seated shoulder press is 335 but i press almost the same on an HS military press machine. i free weight squat 465 but can do 8 plates and a quarter on each side on the hs squat. seems pretty inconsistent.
Right- The mechanics of each are different so the ratios won't be consistent from say, the plate-loaded ISO incline press to the flat press equivalent.
What makes the biggest difference HS to HS for me if grip positioning. For example, on the ISO Flat HS, I am relegated to using more of a powerlifting grip/width and as a result it brings more tri in than does flat bench barbell or DB.