Do the expert levels affect the AI?
No, they do not affect the AI’s ability to play. The expert levels speak only to FOW (fog of war) and what options are available to the player. For example, on the lower levels enemy units are always known (minimal FOW), plus the AI automatically handles many of the more complicated aspects of things. As when the AI sets up SEAD for CAS missions – at low expert levels the SEAD is handled automatically and player never sees the SEAD selection screen at all. The only thing that adjusts how the AI plays is the aggressiveness level.