Battleships are just huge beasts, but they can't do much without their fighter cover. Of course, they can fight equally with other capital ships (at most points), but if the other side have even just one bomber - the battleship is just doomed (except the moment when bomber is lead by the unexperienced pilot, like me - yet it might bring more distraction to 1vs1 combat).
If you don't believe me, try battleship vs battleship with one bomber on Conneticut. Okay, let's say that one bomber can't do much (but may leave battleship a bit crippled), three of them is just a problem to lonely, big and slow vessel, even if all bomber pilots are (hope not) just dumb.