WG fixed an existing issue regarding ricochets off the top of Citadels counting as Citadel pens. My understanding is that a lot of the balancing was based around the previous setup and now that large caliber naval rifles are no longer getting those extra citadels BBs are having a difficult time racking up damage. WG does not want to roll back and reintroduce the bug but in the meantime as they address the new state of the game BBs in particular are having a un-fun time of it.
According to the DEVs, they fixed a bug with AP and armour layers which allowed lots of Citadels.
It seems, that one armour layer was ignored when calculating wheter or not a shell would penetrate.
With the fix, they introduced another bug, which rendered heavy shells unable to penetrate the citadel.
Basically, the smaller the caliber of a gun, the more Citas you get - if the shells hit at an low angle that is and tests by players showed that it was perfectly doable to achieve up to 5k damage per shell on a BB.
This means secondary range for DDs, but when you get close...oh boy, the HP bar of an BB melts like Icecream in an oven.
Several other bugs were introduced too, dispersion on BB guns, HE damage calculations aso.
That's why there are barely any BBs in the game.
Like the new Flooding mechanic though^^...was sailing yesterday in my Blyskawica and gunned down a Cleveland, an Mahan and fired a spread of Torps into an BB.
Over 40k flooding damage, he was put out of his misery by a teammate though.
