The idea is that throughout the story of Underworld, Shadow does not undergo any power-ups in the story to imply that he reached Tenebris' power level right before fighting him. I assume Richard means to say that Shadow was on Tenerbis' level all along (At least
Low 2-C, possibly
Higher), and so with this he scales the rest of the Eternals at Tenebris' level, albeit lower into "At least
Low 2-C, possibly
Higher" since Tenebris is still leagues above them in-lore.
My issue with this change is that the scan(s) being used [
1,
2,
3] to get Tenebris to "At least
Low 2-C, possibly
Higher" tier clearly implies that a human like Shadow wouldn't be capable of tanking the godly, reality-breaking attacks of Tenebris. Tenebris deliberately didn't use his full, godly strength against Shadow because he would unintentionally destroy reality in doing so. So clearly Tenerbis never used "At least
Low 2-C, possibly
Higher" attacks against Shadow, otherwise we would've seen actual visual damage done to the world around them from said attacks.
Okay, so Tenebris never used "At least
Low 2-C, possibly
Higher" attacks, sure. But what about his
Durability? A character can choose to pull their punches, but can they choose to pull their durability? I assume not, especially when it's in their interest to
not be defeated (such as in Tenebris' case). So Shadow harms (and defeats) Tenerbis via physical attacks. Does this make Shadow "At least
Low 2-C, possibly
Higher" tier? Because remember, attacks on this level are something Tenebris deliberately avoids making exactly because they would destroy reality. So if Shadow was casually throwing "At least
Low 2-C, possibly
Higher" punches at Tenerbis, shouldn't we see visual damage done to the world around them? I'm curious what the mods here have to say about this.