The AI, on higher levels, cheats a certain way. They neither train nor 'fight' to level up their caps. Instead, the AI auto-levels, similar to the tier 8 advent research 'mass transcendence'. Not only this, the AI also gets a xp boost in combat. For instance, a Kodiak cruiser is normally 100. To a comp, it might be 150, but the game wont let the player know the actual xp value (mine is just a guess) since only player values for xp are all that is shown. However, all the above depends on difficulty, with max auto-level (over time) for vicious=7, cruel=6, unfair=5, hard=4. After that max mark, the computer players have to fight for the remaining levels (though they probably still get an xp boost of some sort). In rebellion beta, the titans dont auto-level though. What version do you play at what difficulty?