Yeah, i hate when to make the game "challenging" the devs programs the AI to focus almost exclusively to shoot down the player, sometimes exposing themselves to be shot down themelves by my wingmen because they left their side uncovered. But it's extremely frustrating because in real life, during aerial war there is no focus on a "single aircraft", unless this carry a nuclear bomb to drop. I saw this problem also on IL2 Battle of Stalingrad where basically you are the "main villain" of the entire enemy airforce, because they are capable to catching you even when you are miles away from them. In the community they called them the Stalker Fighters because no matter what you do, they will risk even to run out of fuel or being shot down behind enemy lines only because they are programmed to destroy YOU and only YOU. For years people complained, but 1C never listened.
On strike fighters 2 the AI is actually less aggressive, but still frustrating. In the end i think that when you play with red side on SF2 you need to change completely the way you approach the air warfare, otherwise you get always shot down. The problem is how to do it?