Note that the parent poster was referring to unit AI, not enemy AI. Units can do a lot more with a single command compared to something like StarCraft and StarCraft II, which forces you to do much more heavy micro (because your units will pretty much walk in a straight line to their goal, not attack unless they're A-walking, and then stand in a single place without moving as they attack). APM is not as important a factor in TA-heritage games, and many Spring games go to great lengths to reduce APM as much as possible, by doing things like automating "dancing".
