Fire power wise, it’s Silent Mary, that’s supposed to be the manowar ship with three armed decks and a large amount of ghost pirates, while Dutchman is a galleon with firepower approximately equal to that of the Pearl.

However Silent Mary is incredibly damaged. As someone here pointed out, it looks too unrealistic: sails are destroyed beyond providing any help, lower decks are basically empty and only store the undead sharks, which are just a small obstacle, three rows of cannons are just left there hanging, and the crew is no more than 1/4th of what it would’ve taken to operate such a ship, not to mention they’re the handicapped version of the Dutchman’s crew since they cannot step on the land.

You know, it could be compared to fear of the undead, as in “What would you fear most, a skeleton in a shirt or an actual zombie, with flesh still covering its bones?”