Well can't say for LOMAC, but in TW sims AI flies at normal, pretty much the same thing is in IL2, many people that play on normal probably do not notice the "BS moments" in TW sims. Same goes for target priority, explains why I have entire flights firing their missiles at me(had up to 27 missiles fired at me alone) in BVR engagements in TW sims...not very immersive either...
AI is still a moot point in flight sims, if they make AI not to prioritize the play you will have people complaining AI is too easy, if you make them all go super mad on the player, people like us will be ticked off becuase that's immensely unrealistic, more options would be nice lol
Sorry but you did something terribly wrong, if a plane is faster, it's faster the only thing you can do for the above to happen is to fly the faster plane badly ;)
AI cheats in IL-2:
Engine limitation - you can overheat and damage your engine on most planes - AI can't
Structural limitation - some planes will disintegrate at lower speeds than other, this does not work against AI
G forces limitation - AI can pull stuff that will make you blacked out - *unconfirmed*
Control forces - some planes will have heavy controls or will compress at speeds - AI is unaffected by that
AI is always in inhumany perfect trim and flight path, but can actually lost it and stall - spin - even recover