This is a great read, thank for sharing. It compiles and validates my theory, pieced together from watching many reviews. Specifically, the newer generation performs the same as the 'bump' from the prior-gen. But it does it using less power!
A lot of YouTubers want to clickbait/bash the base M3 Pro because it barely outperforms the M2 Max. But it's doing that with two less performance cores, and on a 3nm node, which means less power and heat than a M2 Max would put out. So if the M3 Pro/M2 Max are the same price, smart money says go for the M3 Pro.
One other thing I've noticed after having my 16" base M3 Pro for a few days... the AV1 decode really makes a big difference if you're a heavy YouTube watcher. I can have a video playing constantly in the background, and it doesn't appear to increase battery drain (at all) over what I'm doing with other apps.