How would you know what amount of energy the human brain spent in learning to play Go, specifically? In the same time it was doing that, the human brain was also learning to do, and doing, a whole bunch of other things that AlphaGo was never even trained on- from moving limbs and controlling bodily functions to using language and recognising faces and so on. How would you isolate the amount of energy needed for training in Go, specifically?

I mean, in principle, if you had two numbers, "human energy consumption from learning Go" and "AlphaGo energy consumption from learning Go", you could compare them. But in practice there's no way to come up with such numbers, so what's the point of comparing apples and orangutans?