The reason is so simple as to why there will never be any balance to each battle that involve jets. In the beginning it was better balanced than it never can be now, simply because you had like for like planes against each other yeah you were against planes 1 or 2 tiers higher but planes of that era certainly up to VE and VA days.
Now these same planes of the 1940's are up against jets of the late 50's early 60's, meaning skills of dog fighting are lost due to the get out fast speeds of jets, which the prop planes cannot match, hence impossible to balance with this going on, only jet in Op's as far as I know was the Me 262 varients during WWII, other German jets never left the ground so IMO should not be in the air, nor indeed should any other, Vampire's are early 60's for God sake.
Game will stay permanently unbalanced and IMO ruined till these jets go on another part of the server like in Warthunder, they at least try to keep it real.
Edited by WilhelmII, 05 October 2019 - 10:14 AM.