Chrome will catch up on energy use once non-heuristic / dumb ad blockers are the only option for non-tech people. Once manifest v3 is in place, the other shoe drops, and you start getting ads that you can't block. And ads add page bloat, unneeded data transfer, etc.

E.g, my boring Chevy starts to looks pretty performant next to your Ferrari once you have to tote around 2 tons of bricks and I don't :)