From: Winnipeg, MB
I assumed he was asking if the historically more effective twin 20mm Oerlikon/powered deck-mount combination was modelled differently in the game to something like two single free-swinging mounts. To my knowledge, it isn't. All Brit shipboard Oerlikons appear to be the same type of weapon in stock, regardless of how many are listed per mount in the editor.
And if we went by the AE editor as a mounting guide, some WWII warships would have been sailing around with dozens of AA guns on a single mount.
I don't get that last part. If the Editor says there are 12 guns of a given caliber in a specific position, and then says "Mount: 1", that means there is one barrel per mount, not one mount with 12 barrels.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth