TBH, since you are the one asking, you should be the one testing. Because you are making false claim just because of 1-2 broken gunset and blame the whole nation.
Further, you don't look outside of the box, you are paranoid about the shell caliber stat. Forget it! Forget it. It's how a ship performs at the end of the day within the tier.
You are basically telling me that a RM BB4 doing 36k damage is just too much....
You know if I wanted to screw Italian, I could make a 20" shells doing less than a heavy cruiser 8".