@Willie Sanderson Your opinion is worthless because you're comparing a 10 year old title to a state of the art AI. Comment when it has been released and patched for 6 months if you want to "compare" how AI is challenging.
The AOW3 devs have probably looked at Elemental's AI some, as they are also going to be doing multithreaded AI. I asked this question on thir forums and got a response from the dev, after I pointed out AI was the weak point of the AOW series.
Whether they walk the walk instead of just talking the talk we'll see in a few months. Fantasy AI is much, much harder than space game AI. I can tell Brad's put a lot more effort into the FE AI, but the GalCiv 2 AI is still harder at the proper AI level. FE AI is very good right now outside of some silly oversights.