Few thoughts about salvo size and armament.
Consider history for a moment. In history. Planes were never used in small scale against warships. They were massed. Attacks of 70-200 bombers were used in airstrikes.
There are plenty of examples in History (WW2) of single hits sinking Capital warships.
Carrier Akagi (41,300ton) was sunk by a single bomb hit from a divebomber during the Battle of Midway
Carrier Taiho (37,300ton) was sunk by a single torpedo hit during the Battle of the Philippine Sea
There were also many successful small scale attacks.
-The famous torpedo plane attack that crippled the Bismarck was made up of 15 planes.
-Battle of Taranto which served as the model of WW2 Port strikes contained two waves of 12 + 8 aircraft attacking 6 Battleships in Port ( Sinking one and Heavily damaging 2 more ).
-A strike of 10 Japanese Torpedo bombers escorted by 6 Zeroes, managed to put 2 torpedoes in Carrier Yorktown which doomed her despite heavy air defenses.
Ofcourse the more planes you have available the better ( since hit chances were bad and enemy fighters + AA could easier be overwhelmed ), but that they were never used that way is false. Smaller strikes of 20 planes or less were frequently Carried out and got results against enemy capital ships during WW2. Smaller attacks actually were more common then larger were, but it's the larger ones with hundreds of planes that get all the glory like Pearl Harbour or sinking of Yamato ( the latter which was immense overkill ).
It's actually not far from being the same in Aurora, once you take shock damage and secondary explosions into account any larger single missile hit or meson hit has the potential to be lethal to even the biggest Capital ship, but with lower chance then hits being crippling in reality. Point Defense in Aurora is also more effective at missiles then stopping real munitions is/was, especially during WW2, which again favors you to go for larger strikes.
Another big difference is lack of over time damage in Aurora, when in reality the main causes of ship destruction was not catastrophic explosions but rather out of control fire/flooding ( which only needs a single good hit to get going if the target got bad damage control ).