It's worth mentioning that this kind of comparison is strange. Bitcoin mining does not get more difficult or change in any way with the number of transactions you mine. Mining always occurs on a single 80-byte header, and the entire transaction portion of that is a Merkle hash tree.
The point here is that if Bitcoin would actually finally increase the block size of their chain (like Bitcoin Cash and others have done) then a.) there wouldn't be a constant backlog of transactions and b.) the "energy-per-tx" graph like this would look better.
The point here is that if Bitcoin would actually finally increase the block size of their chain (like Bitcoin Cash and others have done) then a.) there wouldn't be a constant backlog of transactions and b.) the "energy-per-tx" graph like this would look better.