You are thinking about the system of the species by looking at one brain in isolation. That is very myopic. The value is in the diversity of the network.
You are comparing all of humanity to one machine. That is not fair. You should compare one human to one machine. Because then you should compare a network of billions of machines to humanity. If a single machine can outsmart a single human, then a network of a billion of those machines will outsmart a network of a billion of humans (also called humanity). Guess what ? That network of humans even needs the machine network to exist ; the machine network doesn't need the humans to interact.