*in your GT you have no augment on boots btw
do you mean Fighting Spirit ? (since fighting form isn’t a buff) the proc OA+dmg buff ? - because that doesn’t have 100% uptime, it doesn’t even have 40% uptime
the armour reduction is somewhat significant, despite enemies low armor
flat physical dmg is reduced by enemy armour individually by “source”/instance of flat phys, it’s not pooled together to then powerthrough and reduced combined, which means flat phys gets reduced quite a bit