Vaya
Warlord
My last playthrough was that one AI destroyed 5 other AIs by turn 150, and they were too far ahead to defend against.
It was a deity 8-civ epic speed pangaea. :'(
I think I know why. In my current game I fought multiple AIs and attacked a lot of cities and it ussually comes to a point, when defenders just decide to give up city defence, move garrison and surrounding units out and form a line of defence just behind the city. This often happens long before I brake their defences and am able to capture the city. Which means I can basically take it without siege or heavy loses only risking that I lose unit that took the city if they decide to recapture it. I was also under the impression that this issue is more common if the city doesnt have walls.
Sadly I was not documenting it otherwise I would have posted report on github.
Also I would like to see players more focused to skirmishes with their neighbours than bribing/beeing bribed to distant wars. I remember about a year ago when I was playing a game where Mongols or Iroquois where going like a tank through all their neighbours, Kinda miss that.
But except for the city defense part I must say AI tactical capabilities have been improved very significantly.