Ok, First, Supernova is not the highest damage weapon in the game. Heavy Mortar is. Cap ship special weaponry is out of balance, It takes wayyyy to much energy. Cruiser Battle Razors however, are very potent. Im not a bad battleship pilot, but this red hessian cruiser took my hull to 50% and no bats (but some bots left) before i compeltely and utterly anihalated him, he had 3 Cruiser infernos.
IMO, 2 bombers should NOT be able to solo a battleship, 1 bomber > cruiser (bad pilot) 3 bombers > Battleship (good-med pilot)