Update from my Netherlands game on turn 200.
I rushed Gunpowder and attacked Shoshone on turn 162. I had conquered them by turn 179.
They had 7 pathfinders, 5 composite bowmen, and a knight. Why so many pathfinders? Is it because it's their UU? I also took 2 city states, one from barbarians. I have settled two new cities with pioneers, and am building more.
The AI continued to be highly competitive in building Wonders. I could only build a wonder if I had a tech lead or a Great Engineer. They kept close to me in tech, but didn't expand or build any more cities. No AI seemed to declare war on another.
Nearly all AIs seem to be building too few workers. When I conquered Shoshone. I found a lot of undeveloped resources, including silver and marble. Exploring German lands I found the same thing.
AIs are also not sending out units and dealing with barbarians. I even found a ruin on turn 196 about 8 tiles from Madrid, next to a barbarian camp. This may be holding AIs back from settling cities. I found a Shoshone settler just sticking in a city, with a nice city spot just down the road next to a barbarian camp.
I wonder if AIs are too picky about settlement spots. Spain is still on two cities. There are two spots near Madrid that I would consider acceptable, but they are marginal: jungle, desert and a bit of plains. The thing is, there is so much free food available, and enough specialist buildings, that you can build a useful city just about anywhere. Granary + well is already 5 food. Any coastal city can get 3 food from ocean with lighthouse. And you can always send a food caravan to build up a city. Is there any way to tell the AI to settle even in bad locations if it doesn't have enough cities?
This is the current situation:
Me: score 2068, 15 cities, 227 pop, 11 wonders (4 conquered), 12 policies, 352 gpt, 38 techs
Morocco: score 900, 4 cities, 67 pop, 6 wonders, 13 policies, 131 gpt, 36 techs
Polynesia: score 764, 4 cities, 66 pop, 4 wonders, 11 policies, 54 gpt, 36 techs
The rest of the civs are even further behind.