I have started an 8-players standard Terra match on Emperor difficulty normal speed as Carthage on a land locked capital, i have not had a single turn after T60-70 without being at war with at least 2 AIs and they have been spamming units at my cities like crazy; they put sanctions on me, Open door on my CS allies, spamming great generals and stealing my lands and taking a single city takes like 10 turns of fighting and they do fight back and the damned 3-tiles ranged attack of a 70~ combat strength is ridiculous in early industrial era.
Although my experience on Emperor was pretty rough before the AI bonuses got adjusted, i can feel the changes made in the latest patch to the AI unit building & attacking formation but the Navy/Land units building logic could use some tweaking.