Dude, 300 frigates and cap ships in a battle (per side) is pretty damn epic
SLAY THE NON-EPICINATOR!!!
Simply put in a toggle option to limit it to a soft or hard cap of some kind, a soft cap (defined as Ship Limit+25 per planet, or more) will make it so that you need large numbers of planets to ahve fleets this large. You should not have a fleet my equal in size at full dev when I ahve 6 times the numbers of resources fully developed.
again, the game is not designed for that system, and even if the Devs did put it in, I am fully trusting that they
wont attempt to even compromise the gameplay for that toggling. if they do try it will destroy the game from both ends. yes they can put it in, will it be worth it? no.
Finally regarding the AI outmenuvering me, please read the full post: I ahve all but 3 planets (killed off all the other AIs) that are in a line.
yes, but quite obviously the smarter AI with the equal production capacity will kick your ass in a tactical battle. esp. on 300+ unit scales, theres no way that you can have a hard cap and expect to win. soft cap is different.
The AI is not following the rules somehow
regardless of whether or not this is true, I really dont think you want to post this sort of thing. "the computer is cheating" is usually not recieved all that well. perhaps they just have a nicer economy, focus on attacking their buildings, not their units.