User blog comment:FlammeumDraco333/Tales From the Not so Blocky Seas/@comment-25584152-20150630165315/@comment-27797576-20150630170315

To be quite honest, idk, but I prefer the 5" duals due to the much higher overall DPM, and the fact that most of the time, your secondaries are going to be used on destroyers, not light cruisers, as the main battery takes care of pesky light cruisers. And the 5" can mow down multiple destroyers in a matter of a minute.(note, I have not used the 6" guns)