Yes, last-hitting is indeed one of the more important mechanics where execution is important in DotA2. However, there are a ton of tools to stack that deck in y

Yes, last-hitting is indeed one of the more important mechanics where execution is important in DotA2. However, there are a ton of tools to stack that deck in your favor such that a weak last-hitter can still do better than a strong last-hitting opponent. Today, players try to set up the situation in their favor: lane support bullies the opponent so he cannot contest the last hit, you get certain items to have a larger last-hit window, you use abilities to secure the more valuable ranged creep, etc. There is so much that it becomes more like a chess game than a 'who can click in the correct time window' game.