A Goth Metal band would proably be Nightwish, Virgin Black, Saviour Machine, etc.
BTA does have some goth themes but it's more grindcore/hardcore with death and thrash influences as well as possibly Nordic Black Metal. Alot fo the songs have so many different genres thrown in. For instance, one song (forget which one) has a bit of Death, Trash, Chaos-core, Speed, Black, and Hardcore thrown into one massive blitz of pure straight metal. It even follows in the path of The Showdown with a blue grass piece thrown in amongst the clamour of instruments.
Cher-plam! A awesome review plus samples!
jesusfreakhideout.com
I highly suggets listening to "Elegy", "The Trivial Paroxysm", and "Night's Sorrow" for a good taste of what BTA is like and how diverse they can be.