Lose Secondaries, Artillery Value Goes Up?

[MerianCooper]

So I noticed this on the Wyoming, and now I see it on the New York. With the "B" hull, your main guns stay exactly the same, and you lose six secondaries, but your overall Artillery rating goes up.

 

How's that work? Note that there are no intermediary upgrades that affect the main guns, and I assume that that isn't taking into account the AA buff, since that would be under AA, right?

 

[suleiman71]

Maybe the upgraded hull gives you far better AP shells? 

[Aloeus]

Maybe the upgraded hull gives you far better AP shells? 

This. You get the much better mk 16 shells for AP and you even get better HE shells. 

[MerianCooper]

Ah. OK, then, Sounds good. Thanks, guys!

[Deterrumeversor]

Here specifically is why you gained artillery increases with the upgraded hull....

 

On the Wyoming you gained:

Increased turret rotation speed

Increased range

Increased percentage chance of starting a fire.. But no extra initial damage with AP or HE

 

On the New York you gained:

Increased damage with both AP and HE

Increased percentage chance of starting a fire

[Carl]

Also the upgraded ap shells on he new york, (and new mex with the second hull), have waaaaay better penetration.