RE: Bow Manufacturers advertised specs.
Of course, the weights are determined with no accessories at all, and most likely with the lightest limb sets they make. A greater variance in final shooting weight occurs, depending on the accessories you choose to put add. It's real easy to make a bow much heavier or much lighter, by choosing accessories carefully. I've found the easiest way to reduce weight is to not use a bow quiver. Adding weight is real easy.