Same can be said for any game.

Wanna be good at FPS? You gotta learn how to dodge, twitch, jump and thats just 1/3 of the equation. You need to know the map layout much more than SCII, you gotta know sniper nests and camp spots. Even in Quake III, you gotta learn where the weapons, health packs, armor and armor shards are and what their respawn rate is.

Wanna be good at driving games. Same shit. Course layout, chicanes, when to brake, when to floor the gas.

In the end, if you want to be good at something, you've gotta learn.