Gunboats are uber.
Two gunboats can take on any capital ships.
Hell I remember me + other IMG gunboat taking out Storta, 2 falcatas and poorly flown tridente. Easily.
And bombers vs gunboats - there are certain ways on how to fly gunboat where you cant nearly hit it while it rains you down with chain or even triple chain.
Pulse and Razor on gunboats can own anything big. Normal turrets put you on range disadvantage and cap can blow you away. Visit Liberty, try it! You will find a gunboat bunch that takes out ships like flies. 1500 range with that speed and power useage = laughable. And the sppeed and agility, bwahahah. You aint hitting it unless you are awesome with your weapon groups on capital ship. It just thruster shoots you out of effective range and boom, you are dead. Have a nice day.
Gunboats > everything else. Think you can kill it in bomber? Well, try dual missile GB. Fail, try again. Or try chaining ekiller. You dead too.