Look at throughput on a single lane from the MAC to the PHY.

802.3dj is maybe finishing up soon and has 200gbps lanes. Which is more or less about what pci-e 8.x is supposed to be. The table in the article sums both directions of a lane, which leads to confusion. People want faster ethernet in fewer lanes, so no doubt a 400gbps per lane standard will be starting up soon for pci-e to leverage as pci-e 9.

> not in a format I would normally call Ethernet

Why, because it doesn't use ether, or vampire taps?

Ethernet works over many media, and that's been pretty consistent throughout its life. It started from or at least was inspired by AlohaNet a wireless system, then you had thick and thin coax, then twisted pair and fiber, now twinax and board level interfaces are common, too.