Since Norb does all his testing to AMO standards - 540 grain arrow, 60 pounds at 30" draw AND 360 grains, 60 pounds at 30" draw, per ASTM1544-99 - then the VM figures he comes up with will be lower than they'd be if the bow was tested to IBO rating. So his ratings would show better efficiency than someone would actually get by shooting the same model bow with a 350 gn arrow at 70 pounds and 30" draw. Right?