I don't think I agree with that at all. If you can control 1 unit it's trivial to control 100.

I might argue that the AI vs AI challenge in Starcraft is deeper and more difficult to master. But for AI vs Player the Starcraft AI has an enormous mechanical advantage. Being able to harass mineral lines in four different places is a big deal. Being able to perfectly micro multiple lines of attack/defense is a big deal. It's very unfair and very much in the AI's favor.

Chess < Go < Starcraft < League of Legends

In my moderately educated opinion.