I played the OG SC on battle net in high school. Was such a cringey freshman I would say "see you on battle dot net" til someone just corrected "battle net".
Anyways, I was semi decent as Zerg. Recently picked up SC II and it's incredible. I'm only about 9 years late, but this HAS to be the most difficult game to master.
I know this thread is high on fighting games and the intricacies involved (esp SF), and it's apples to oranges, but watching streamers/pros, I'm convinced this is the most difficult game to truly test your balance.
Just watch the first minute... shit, the first 45 seconds.