The replays were ok for me,
To be fair Mylaur anyone above a 300 rank playing against a non cheating AI is going to have an easy time.
For giggles you could try RNGAI (self promotion, just make sure you read the description for setup tips) with a 1.5 cheat/build multiplier on that same map and see if your experience changes.
Getting the acu to be remotely in the realm of a human is damn near impossible(have spent days/weeks/months trying), an (almost) single threaded game just doesn't have enough clock cycles to do complex calculations at the speed to capture the data required to react and make decisions, you can do fake micro but like you said the acu doesn't really know 'what' to do.
Example for reference : getting aeon auroras the try and maintain weapon range on a target during combat takes approximately 7 function calls per second per unit plus supporting logic, if there are 50 T1 auroras on the field fighting that's 350 per second and 50 units is a small number.