All this data is potentially out of date, and should be taken with a truckload of salt
The Abaddon is the mightiest t1 amarr battleship. It possesses high damage capabilities and perhaps the strongest tank a battleship can dish out. Due to their extraordinary resistance, Abaddons are common in battleship gangs, backed up by logistics vessels. Ironically, due to the fact their tank is almost unbreakable and will soak up incredible amounts of fire, Abaddons are many times "ignored", as concentrating firepower on it buys a considerable amount of time to the enemy. Abaddons are also used in PVE mainly for tanking whole mission areas without ever having to warp out.
Below are additional ships images. Click the image below for a larger version: