I don’t think that’s really equivalent. They are averaging the energy usage of mining and usage across the number of transactions. The overwhelming majority of that energy would be on mining.
What is the equivalent of mining in terms in VISA transactions? How much energy does that use? What is the marginal cost of a Bitcoin transaction? If you’re including Bitcoin mining in your per-transaction costs, shouldn’t you include the entire operating costs of VISA, along with the partners they rely on like banks, mints, and even physical mines?
Bitcoin is not a 1:1 equivalent of anything in the traditional financial world, so coming up with a meaningful comparison is difficult. It’s a little bit currency, a little bit transaction processing, a little bit “mining”, and a little bit banking. Despite the hype, I don’t think it’s a full replacement for any one of those things.