I think Doinb has excellent game knowledge and game-sense, which allows him to be world class. Hai was also a world class mid-laner in the sense that he could use shotcalling to win games at an international level, but no one would call him a conventional mid-laner. Sometimes being smart and developing a new way to play a game that is highly effective is better than being conventionally "good."
How many LPL games have you watched this split?