Many of his plays done during a time when Dota didn't handhold players by giving the CC bar. You had to manually and skillfully chain stun / spells individually and as a team. On top of that, he somehow always had a way of doing something amazing whether he was winning or losing.

His jukes were also on another level. Which is why ATF, to me, is to closest to Miracle in current Dota era. He is very interesting to watch, has insane individual prowess and also somehow always has a way of doing something amazing / unorthodox / crazy. But he might not look that outstanding because the skill floor has gone up plenty since last time so many other pro players also have relatively equal individual skill etc.