It makes sense to me that stationary battleships being used as defensive cornerstones should have more firepower than the roaming patrols, but not to such a large degree. Since they don't have their engines running or anything.
All power to weapons anyone?
The derby should have the ability to annihilate anything that comes through the Tau-31 > Leeds JG. Especially fighters/bombers before they get their controls back. I mean thats what its there for. I'd expect the same from any other BS guarding a JG in any other system, so make them equal, or atleast equal with respect to each houses strengths.
No need to nerf the Derby tho, that makes my job alot easier.