"Power Levels" are often cited by EDH players trying to find a pod to play in, but such a subjective piece of criteria fails to address the complexity of an EDH game/pod. I argue that Power Levels do not exist and should not exist - instead, the Intent of a Deck (i.e. what the deck aims to do, how quickly it gets to a potential winning position, etc.) is far more important than a single number based on subjective criteria. Rule 0 conversations are critical in EDH and need to be had before every game.
You can find Dave Kosin's 2019 article on this subject here: https://strategy.channelfireball.com/all-strategy/mtg/channelmagic-articles/we-need-to-get-better-at-talking-about-the-power-level-of-our-edh-decks/
You can find my other work at linktr.ee/mtginquarantine, including my affiliate links to Inked Gaming