as stated above ,, just because the draw is the same,, does not mean the bows have the same cast and will shoot the same arrow,, or that the same arrow will shoot well from either bow,,, the handles are shaped different and the string orientation is probably different etc etc,,, I have a feeling if the arrow pass was tuned a bit and with proper arrows the osage would shoot well for you,,
if you shot bow bows through a chrono,, one is probably shooter harder than the other,, I am guessing the osage since is has less string follow,, it may require a stiffer spine to shoot like the other bow,, just guessing,,