Autowin t1 on some land maps
I have no clue on why u consider this fact as "balance".
strongest t2 phase, strong(est) t3 phase, decent exps, best t2 air, best midgame ACU, best frig, second best or best navy.
This all listed is very personal, not general. I mean I have no idea why u call aeon strongest t2 and t3 phase. If we consider blazes, they are very strong yes, but I do not think sera or UEF t2 worse. Sera has also 2 strong units, yenzyne and il shavokhs, which have also 2 same use cases as aeon (1 has big alpha and 1 can easily kill t1 spam). UEF has mobile shields, riptides (which have the highest hp among all hover units), and pilars are also not bad. I do not say they are the best, but having those facts, I can not accept t2 aeon as best, one of the best yes, but not the best.
T3 land for me is in perfect balance, I can not say that aeon also are strongest here, also good, but not best.
About exps, they are also quite good balanced, GC is very good against t3 army or other exps, like chicken or ML, but it is worse than chicken and MEGA when it comes to fighting against bunkers, cause it has no splash damage and very low dps, compared to other exps.
Frig is no way the best, it was very strong before the patch, but now it is way too expensive to call it the best. Of course it will beat every other frig 1v1, cause it is more expensive. But when fighting against cybran, you will have 14 v 13 frigs (both spending 3640 mass). Considering HP, cybran gets 25200HP and aeon gets 24050HP. Cybran gets 900 DPS and 764.66 DPS. Considering all this, I can not say aeon frig is the best. It has become way better cause of range buff, but it is still too expensive. Also add to that the fact that they do not have any AA.
On t2 stage, I have no clue on why u still consider aeon destros as best, cause they are in fact shit. Since the debuff, it is very painful to play with them against other destros, cause they miss way too much and 2 second worst torpedo attack to ON-WATER targets (after the UEF). We have tested a lot with spikey, they have almost no chance against sera destros, as they barely hit them, and super fun fact: if you submerge sera destros and come out in range of their cannons, they even start firing eariler, cause aeon needs more time for charging.
On t3 navy, I agree, aeon is strong. Having the highest DPS bship and also tempest.
Check the megathread-statistic post and see how often Aeon got veto'd in 1v1 pro tourney and how often they got picked if there were no vetos. Notice something?
There have been only few tournaments after those debuffs, and statistics is also more relevant if you consider the win rate AFTER the balance patch