r_rolo1
King of myself
That is a very nice nice piece of intel, ori. Thank you 

There are only four instances were the AI uses the Attitude Value (i.e. the integer value):
Diplomacy Vote
Determine Worst Enemy
Determine which city to nuke
Become Vassal while at Peace
For all other instances either PlayerAttitude or TeamAttitude (i.e. Friendly, Pleased etc.) are used. PlayerAttitude is the attitude of on AI player towards another player, TeamAttitude is the attitude of one AITeam towards another Team.
The instances in which PlayerAttitude are used are:
Civic Trade - ask an AI to change Civic(s)
Religion Trade - ask an AI to convert Religion
Trade City - ask an AI to trade a city (Note: that does not mean it will trade it, it just is not readened out)
Give Help - ask an AI to give help
Demand Tribute - AI demands tribute
UseSpy - all Spy actions against a player
UseNuke - the AI decides which city to Nuke depending on attitude
The Instances in which TeamAttitude are used are:
Stop Trading - trade stop trading
IsFriend - for you Declared War on a friend memory and for you nuked a friend memory
StartWar - for decision to start a war
Tech Trade - for tech trading decisions
Map Trade - for map trading
Trade Peace - (broker Peace between 2 AIs)
Trade War - (broker War between 2 AIs)
Open Borders - explains itself
Defensive Pact - dito
Permanent Alliance - dito
Worst Enemy - who is my worst enemy?
NoWarAtttude - (NoWar threshold)
DiploVote - which team to vote for?
Vassal - (Peace)
Notes:
Item 2:
source: CIV4HandicapInfo.xml = +2 on Settler, +1 on Warlord, 0 on Chieftain, -1 on Noble and above
warsuccess just adds killed units and captured cities where cities are weighed slightly more than one unit (but not really much a city is worth I think somewhere in the range of 5-10 units)...