Terrible at what? For anti surface its an 80lb shell v a 55lb shell, before radar it will simply destroy the lighter gun at range or if it needs to penetrate protection. 9,500 yards (8,690 m) 3" (76 mm) SAP - 3.25 lbs. (1.47 kg) TNT v 7,400 yards (6,770 m) 3.0" (76 mm) Special Common Mark 38 - 2.04 lbs. (0.9 kg) Explosive D Max range (not that they will hit at this but range they can hit will likely be a % reduction of this in daylight before radar, especially as shell splash size will determine salvo spotting range) 45 degrees 23,400 yards (21,397 m) v 45 degrees 17,575 yards (16,070 m) All of the above are as you say a balance as is the cost between two 3000t ships (super DDs) and a 6000t ship (CL) what did you want and where and who will you fight will decide what’s best. Do you have more details (or links?) doctrine and fleet plans will be drive more by your nations sats and objectives than ship designs (that should come after)....?