Originally posted by Elementalist.:
For one campaigns have certain objectives, it's not always about dealing with an AI rush. There is exploration, completing the occasional quest, sometimes the AI is blocked from reaching you for a good period of time so you can build up forces, in next missions you already have a good level so you can expand faster etc.
Normally I would not mind about cheating but it attacks you with superior forces all upgraded where you could barely build tier 7 and certainly could not buy everything. Also sees the map and gets a good discount in buildings. And once you gain some experience it still has no chance

It's beatable once you get to know it just like H3, the thing is that in H3 it you the illusion that it was a human player, this one doesn't.