> [With PoS, Ethereum would lose] the baggage of wasting the electricity of a small city to keep itself running. "Small city" sounds suspiciously small. Last time I checked, Bitcoin had the same electricity consumption as the entire country of Austria. I can believe that Ethereum has less miners, but by that over 2 magnitudes?
Bitcoin mines 12.5 BTC (exactly) per 10 minutes (approximately). Normalizing the ETH rate against the BTC, we get 2 ETH * 6 * 10 = 120 ETH.
So at current market rates, 120 ETH * $132 vs. 12.5 BTC * $7,341, $15,840 ETH for $91,792.5 BTC.
This suggests that the BTC network should use roughly 5.8 times as much energy as ETH, to derive an equivalent profit per unit energy.