Thread:CDRW/@comment-5176943-20140329133621/@comment-861160-20140330063806

That's not strictly true. For example the 46cm main cannon is better AA than several so-called AA guns, because it recieves a slightly better modifier and also has fairly high base AA. In fact, the strictly AA guns are typically no better than equipping main cannons in terms of AA performance, unless you have some of the really rare ones.