Sorry to say that in my test game, the AI seemed, if anything, stupider.
I played as Greece on Immortal, Pangaea, Small.
Some of the stupid things I noticed:-
- Nobunaga kept pumping out settlers when I had his last city down to 1HP and was farming it for XP
- During the process of taking Nobunaga's capital, he embarked ever more units than usual. Made it really easy to take.
- Sejong was the next to fall, and he built about 10 turtle ships during my land-based siege of Busan and Seoul.
- By turn 150 there were a huge list of wonders not yet built.
- AIs seemed less interested in religion. I was able to found one really, really late. Like renaissance era.
And, worst of all, sad to say, is that not a single unit ever moved and shot at me. The only other mod I played with was Historical Religions. So either there is a conflict there (doubtful) or this Smart AI mod is not working properly.