Similar sentiment has been expressed by others.

In the (simpler and less studied) game of Shogi, AG made very startling moves, which increase the number of vulnerabilities (and opportunities). AG is able to better balance all these combinatoric paths.

Perhaps as humans, we have limited combinatoric capacity, and hence are biased to conservative moves to reduce our search space (so we get lower expectations since we have to bound our variance?).

Whether this is less-strategic or simply less-bound-by-human-limitation is up to discussion.

end-rant

EDIT: Would be interested to hear your views about larger DRL domains. Drop me a line if u r interested gaxasit@getnada.com temp email.