PibbZ said:
Thats nice bonuses, 10% less unit cost, 125% research, 2 health, 4 happiness, 2 free units and archery from the beginning
You're reading the wrong bit of the file for AI bonuses over human players. The unit cost (90%) and research (125%) indicate the base unit cost and beaker cost of tech at Immortal level for all player;. i.e. techs cost more at Immortal than noble for all players.
The AI bonuses in these areas over the human are given in the
AIUnitcost line, and so on. So at Immortal base unit costs are 90% what they'd be at Deity for all players, and all AIs only pay 80% of that base amount.
So (and I'm not claiming this is a complete list, but based on the XML file), the AI bonuses are:
1)The AI research and production costs are only 80% of the human player's (this is by far the most important bonus).
2)The AI starts with three archers, a worker and a scout in addition to its normal units
3)All AI start with Agriculture, Hunting and Archery on top of their normal starting tech.
4)AI only pays 80% of the civic upkeep costs and unit upkeep costs.
5)AI only pays 50% of the unit upgrade and unit supply costs
6)AI inflation is only 80% of that of the human player
7)AI units get a 35% higher bonus against animals, and 25% higher against barbarians than the human player's.
8)AI war weariness is only 60% that of the human player
9)All AIs start with 10 free hammers in their first city
10)All AI's get a concealed -1 to diplomatic relations with the human player
I may have missed one or two small items. AIs definitely do not have higher health and happiness levels than the human player.