One Billion Pirates vs The Legions of Dracula

[DrampardonMe]

Been thinking about this a bit more than I probably should, but it IS October, so no harm in asking, right?

I understand in a straight-forward fight that Team Dracula would most probably win, but it makes me wonder under which circumstances the pirates could claim victory. Keep in mind, the pirates in this scenario aren't magic/cursed/undead or whatever, but they ARE pirates, and there's a billion of 'em. All I've got at the moment is "Load the cannons with garlic!!"

(You can assess this seriously, or you can have fun with it. Mostly asking for research purposes.)