PLD has A+ sword skill but suffers from lack of attack. The job has no native attack traits, and subbing /DNC or /NIN does nothing to help.
Subbing /WAR and using Berserk/Aggressor will help with damage, but that might not be your preference.
Centaurus Earring (Attack+10) instead of Suppanomimi for WS macro for starters. Drop the Soil Belt from your Requiescat macro and use Anguinus.
You eating Red Curry? Your Shikargars the STR path swords? Merit Requiescat 5/5 yet? These are additional factors which will affect your damage.
Of course, best option for strictly DD is Mog House/Job Change or get an Almace for fodder mobs in Abyssea. PLD used to be my main job back at 75 cap, but it's really just not all that useful anymore for anything but Voidwatch. Even then, it's dropped from favor on most of the lower tier fights as well.