Strangely enough, in Call of Arms, with the Dominion and Cardassian fleets attacking, they were having no success. Only when Dukat order the fleet to target a specific area was when the shields went down temporarily. And still not enough to board the station.
The Klingons dropped the shields and boarded the station.
DS9 always played up the angle that the Dominion was somehow superior in weapons. It was really subtle.
Like, you'd never see a Federation ship directly destroy a Dominion ship, at least on screen. Except for the Defiant or Defiant type vessel.
They also switched to from shield bubbles to tight shields, where with fire scorching the hull, but not necessarily damaging the ship.
It had a cool look.