The macro seemed fine -- AlphaStar usually had more workers than the human opponent, in every game, and was producing more army. The suboptimality seemed to be

The macro seemed fine -- AlphaStar usually had more workers than the human opponent, in every game, and was producing more army. The suboptimality seemed to be in army composition (blink stalkers) and strategic decision making (pulling all of a superior army back home to defend a single warp prism drop).