For aircraft with BR 11 and 11.3, the realistic mode in air battles is totally broken. Want to be constant uptier? Play anything with BR 11 and 11.3. Want to be constant downtier? Take anything with BR 11.7. It’s not normal for me to be in an uptier all the time, but just take an F-14A and I don’t meet an uptier, maybe 1 in 20 battles and I’d be surprised if it was that many.
You canceled battles by nationality and made a mockery of it. It was a long time ago, but it was to help matchmaking you told us, among other things. Well, hell, at least give the game functional matchmaking.