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This is mostly meaningless. Of course computers are better at the twitch/mechanical aspects of video games. It's trivial to make an AI that's perfect at Street Fighter or Counterstrike, for example.

OpenAI isn't a good DotA player though, it's just very mechanically capable at this tiny subset of the game. Still impressive but not really DotA.

Still, they heavily limited the scope of actions of both the player and the agent. It's not like the research space consisted of all the items/actions available in Dota 2.

On the other hand it quickly got figured out how to beat it. And it could only play one hero.

But it still beat a bunch of top players.

I've played dota-like games in the past (at a medium-high level). The skill gap in this game is remarkably huge.

It's a type of game where a new human player would get absolutely destroyed with a 0% chance of possibly ever winning, even in a minimal scenario where only 1 hero were involved.