It´s not THAT easy.
I can basically forget about the Generated Campaign, because, while AI=180% would probably be fine for my Attacks/Advances, I wouldn´t survive a game where I have to Delay/Defend at that ratio, not even an ME, likely. I´m not THAT good.
Also, you keep saying the balance is for the sake of the AI. But while the current balance makes the AI look better when attacking, the AI is totally hopeless when defending. What you gain for the AI on the one side, you take away on the other...