As you note, that's only micro, and it's the easy part since you can do most of that with rather simple rules and just high apm (which is where the benefit comp

As you note, that's only micro, and it's the easy part since you can do most of that with rather simple rules and just high apm (which is where the benefit compared to human players comes from). The interesting part for AI is how to get there, the longer-term planning, recognizing the enemy's strategy based on what it observes, reacting appropriately, etc. So far those are the things AIs have trouble with.