I can see the validity of your points. Going up against jets with no trump card does seem unfair even though most jets are avoidable. The presumed design scenario doesn't typically pan out. The high number side is often getting beat up badly on both fronts. On the micro level, any given skirmish is no different between the high numbers side and low numbers side. The only thing it can do is, assuming the high numbers side typically will advance the war effort quicker, is slow them down some, which just slows down how often maps change. Is that the purpose of it? It doesn't encourage side switching to balance much anymore since htc upped the switch time to 12 hours. If you switch you are stuck. Also, since aces high is a social game with squads, if you have six squad mates on and you want to switch sides but one squad mate can't switch because he switched earlier that day, then it would be rude to them to switch, so you are stuck.
I'd like to hear from the horses mouth the design purpose and intent of eny. It doesn't fairly address imbalance of local fights in a 3 country war.