Historically 110 g2 was not used to strafe buildings and ground targets,but yet its the primary choice for many NOE base takes.
MA is a free for all fighting areana,there is nothing historic about it other then the models available.
You're really reaching here. That is simply a figment of the game due to how the game calculates damage to structures.
Sorry, your whine asking for 20mm cannons so that you can use a bomber that wasn't even allowed to roll upside down in reality to dogfight is completely absurd.