This is not a rant. Lets say that I am simply amazed of the utter stupidity of the diplomatic and battle AI

I started a new campaign this evening as New Spain because I wanted to try something. On my last campaign I was able to buy a town of the Aztecs in turn 2. Later they attacked me and I got a ceasefire in exchange for four cities. My new campaign was on H/VH and I bought an alliance from the Aztecs in exchange of four cities and 7000 per turn (3 turns). I restarted my campaign on VH/VH and this time I asked for all the cities they had (except of course their capital). I had to pay 18000 for three turns and got an alliance and eight cities.

My mission from the Spanish consulate was to capture rebel held Tototepec. It is village without walls. I let the rebels sally and was assisted by my precious allies. I withdrew my forces to a nearby hill and got the message that my allies had entered the battlefield. I was able to control them. I set them on offensive and let the attack the village center. From mu nearby hill I was watching the natives slaughtering each other. The outnumbered Aztecs routed and withdrew from the battlefield pursued by the entire rebel army. When the rebel army was almost out of sight I entered the village.The rebels returned only to get slaughtered. I lost eight 8 men and some native mercenaries.

My army is on its way to Tenochtitlan to finish the Aztecs off. It is now turn eight and within some four turns the Aztec empire will be gone. Not by blitzing but because absolute lunatic diplomatic behavior of the AI.
I have already finished and won a New Spain campaign. I really loved that one because I had some hard fights and had to preserve my Spanish soldiers and had to loot cities to get some money.

The battle AI is overly aggressive, but is also attacking the wrong enemy. This was not only in this New Spain campaign. I discovered in an Apachean campaign that the AI forces during a sally were attacking my scouts that were supposedly hiding near the village when my army was deployed on a hill. Again the entire rebel army pursued one unit of scouts while my army could simply take control of the village center and win the battle.

This way it is to easy. Play twelve turns and the Aztecs are gone. Turtle a bit, build up a sizable force of conquistadores and the Mayans are extinct.