Hopefully this is the right forum. I've noticed the Vamp Coast has a tendency to have defeats, and usually horrible defeats, when it should be the opposite case and the battles themselves are decisive victories w/ almost no losses when fought manually. I'm not sure which units specifically have a lower auto resolve weight but most of my armies for the Coast feature a large amount of Deck Gunners, a line of Depth Guard, 2 cannonades, and two mortars with some misc units thrown in dependent on situation.
I'm all for manual battles when I need them but fighting easy victories against minor forces because I'd be annihilated in an auto resolve is tedious. The primary forces this has been a problem with have been elven but that's also the predominant forces I've gone up against as I've been playing The Dread Fleet.
1