I guess it would come down to the AMO and IBO specs of each bow.
I had a buck saber in the solo cam with an IBO of 295, not sure what the dual cam model produced.

It would be very impressive if her 43# pull bow was out producing a 60# bow. It sounds as if the lighter arrows might have damaged your bow if it " creeks and makes all kind of noise now."

Could it be time for a NEW bow for you, or at least a newer model?