[justfor1comment]

  > Because Starcraft is 1v1 and LoL is 5v5
  Starcraft can also be played 5v5
  > Also because Starcraft has three races, i. e. 9 matchups
  But each race has 20 different units. The units are more 
  similar to LOL champions than the races. There are also a 
  tonne of different buildings and upgrades to choose from.
  LOL is very similar to DOTA and given that OpenAI already 
  beat *human* players in DOTA, LOL is not that farfetched. The 
  current work, although impressive, still cannot beat *human* 
  players in SC2. The complexity of designing AI for a game 
  depends heavily on the branching factor of decision in the 
  game. SC2 has a much higher branching factor than LOL or any 
  other games played by n00bs.