AI in Might & Magic: Heroes VI

Well, I was really annoyed by the illogical way the AI caused losses. HOW can you lose troops when you have 2 units of priestesses in your army, whose healing waves completely resurrect any of your units every turn? And yet, the AI manages to do it =[br][/br]With Necropolis, yes, necromancy (especially level 4) + mass vampirism = a game with virtually no losses, by the way. However, the dispelling spirits of the humans are a problem with this playstyle; you have to counter them with petrification or time stop on the first turn.