When speaking of Doubled die yes, that is the terminology behind the hubbing process that caused that class of doubling. You have damage, that is NOT doubling. PDD Plate disturbance doubling is a form of damage and stated as such because of the visual effect. Hub doubling and
Strike Doubling are two different animals,different times and different means. Read my Volume 1 below for a full explanation of the hubbing process, it will help you in the long run.