Left game running for an hour, please explain AI behavior
I'm new to Sins and I'm trying to figure out what caused some odd behavior from the AI.
I was playing a 8 player free for all on a 3 galaxy map against 6 hard and 1 unfair. I began with aggressive colonization, #1 colonization #7/8 everything else for a while. After I had 1/3 of my galaxy, I was #1 in everything and worried that the game would be anticlimactic. But in the time it took me to reach 1/2 of my galaxy (finishing off a weak hard), I was #2 in everything. Not only had the unfair expanded faster than me, he controlled nearly all of the other two galaxies! I was worried at that point, and decided to send my entire fleet to conquer as much of the remaining hard in my galaxy as possible while fortifying the star and two wormholes that the unfair could invade through.
I had to leave as soon as the hard sent a level 5 Ankylon to my fleet, but forgot to press pause, and discovered my mistake one hour later. I immediately noticed three things:
1. My fleet was essentially in tact. The Ankylon seemed to have never died, because it was still level 5.
2. The hard in my galaxy had destroyed one of my plantets, but couldn't colonize it due to my culture. It had destroyed one of my wormhole starbases that was interrupting trade. I had one completely undefended planet next to it which was not conquered.
3. The unfair had done absolutely nothing.
I found this very discouraging, and I was hoping to hear from the community here what caused this behavior, and whether it would be at all interesting to finish this game. How did the unfair go from ~.25 galaxies to 1.5 galaxies in the time it took me to take over five planets? Why didn't it invade me when it had two galaxies? How challenging will it be to fight my way into his galaxies? Why didn't the normal attack my nearly defenseless planets? How on earth did the Ankylon survive for so long?