Note the fleet supply number. That happened in a game last night against unfairs as AL. I turtled up in my home system with my Coronata and four starbases. That game, all I built were about 40-50 frigates, 5 capitals, and 1 titan. Everything else was captured via Subjugating Assault and Domination (though I had to do that manually since the AI doesn't know how to use it well). Towards the end of the game, I got as high as -824 fleet capacity. Yes, I'm Advent and yes I know the synergies, but still. I'm able to put out a force that other players would have to lose 75% of their income while I was only fleeted up to 40% or so.
Also note that apparently the AI named its titan "A devastating shockwave." What?