Thread:TheLenrir/@comment-24049657-20131014142522/@comment-23404482-20131026041218

Bombers increases the damage you do during the actual shelling phase (The part where your CV/CVL launches 3 planes and it slowly hovers to the enemy and bombs them). That and they sometimes do divebombing in the initial air-raid as well.

Firepower supposedly is the base-damage for that particular unit, dive bombers stats are usually +ASW +Explosive, which is why equipping them will do more damage during shelling.