Hmmmmm good call. I anecdotally thought that to be true... Do you know what's the super spam bonus the AI gets for Diplomats?
No, not really. But on higher difficulties you can see AI influence in the thousands. It get yields, and it does not get tired of sending diplomat after diplomat. A human would forget to send one once in a while.
What's the general strategy for starting with the progress tree? I see that it seems to help with science but even on prince, by the renaissance I still am somewhat behind the ai by a tech or two. I tried just growing fast and focusing building science buildings but that doesn't seem to cut it.
Does anyone have a link to or can discuss a strat/ideology that would be successful with the progress tree?
Check the strategy section.
Currently the best strategy is said to be beelining to the science on connections policy, and connect your cities as soon as possible. It grants massive food (for happiness) and science. Especially science, since it gives more techs, and progress tree receives culture from every new technology, so focusing on science is the main way to advance.
About settling, look for defensive positions with at least two resources in the first ring. Progress borders grow slowly, so you want your cities to work on a few resources from the start. Don't mind if these cities can't work on every good tile in the three rings around the city, Progress usually lack the population to work everything, and besides, Progress makes every city worth it, regardless of the location, thanks to the efficient building. This means that you can settle a city every 3-4 tiles.
Settle your cities as fast as your happiness and your army allow. Too many cities without garrison is a clear invitation for invader enemy armies.
Religion wise, it is harder to found a religion not being a religious civ, but it is easier to produce faith once you have yours. Having spare faith in mid game is useful for proselytizing (spreading your religion is harder for tall empires).
And as a general rule, try to have always more improved tiles in your cities than your city size. If that's not the case, produce more workers.
Progress has a small advantage at befriending city states, since it usually excels at mid-late game gold and production, making it easier to spam diplomats.