If I understand Hashashiyyin correctly, what he meant by superior AI with difficult terrains is actually pre-battle positioning. Hashashiyyin metions, he frequently would have to tire his troops before being able to fight the AI on mountainous terrain.

I have a different question though: did Hashashiyyin try to do both sides of the battle: i.e., attacking and defending? It seems, the pre-fight exhaustion would be a factor in a scenario when the player attacks. What happens when the player defends (and has the luxury of choosing the more advantageous terrain)?

Quote Originally Posted by R'as al Ghul
Your analysis concludes that the AI is superior on VH because of tactics and terrain. I don't see how tactics are involved when you charge two units frontally against each other. Did the AI, in any of those tests, flank you or did it always charge you headon?
Also, in how far do you think did the terrain influence the battle?
You took two equal units, both are/ should be affected by the heat that you most probably have on the Morocco map. I don't see any advantage for either unit. Was one of the units charging downhill or was the height equal for both? If the AI always charged downhill into your unit then it's clear why they won 90% of the time.
You need to offer more information for these tests to be conclusive.

R'as