Seasick wrote:
Scharnhorst class with 12 28cm guns is better than 9 28cm guns. The original deal was that the 15" guns wouldn't be ready for the "Twins" so a new model 11" that was already in development was substituted.
The weight of the APC round was close to 725 pounds so in a broadside of 9 guns you get 6,525 pounds of AP thrown, with 12 you get 8,700 pounds of AP thrown.
A) As I understand it, they were both designed to receive 38cm twins, but Hitler wasn't ready to throw out Versailles so a compatible 28cm triple was designed & subbed until he was ready to go all out, they were just never able to get the replacements produced & fitted (to busy with BM & Tirp).
B) In any case 9 or 12 wouldn't have done Scharnhorst any good. DoY was out of range & she couldn't close, so being unable to reach with 4 tons instead of 3 wouldn't help. 38cm guns would have.