Originally Posted by
AdvancedWind
Then here's your explaination:
Most of the damage comes from the weapon. You shouldn't really notice a major drop in stat because you're lost 10~20DEX / PIE from taking your armor off. If the damage you received went from 500 to 650, that's a 30% increase against a regualr attack, not exactly small. I bet that a on a stronger move (like Moogle Eye Shot), the difference was much higher. Not to mention the most dangerous moves in the fight are Pom Flare and Memento Moogle, two magical moves that ignores defense anyways.
You really shouldn't have that much higher DPS difference simply because, at best, you had to be healed more often (somethng that does not affect the actual damage you do) and lost a bit DPS from armor materia - again, far less relevant to your damage than your weapon.
Do it again with a weaker bow and arrows and you will see a major DPS drop.
Removing your defense gear in a battle where you can avoid most damage and the dangerous moves ignores defense anyways wouldn't really have a major effect on your DPS.
Also: What Chard said