1. Brook's "soul king" is an epithet he got when he wasn't being a pirate, that was his name when he was doing concerts.
2. Hancock is known as the Pirate Empress, because she's the current Empress of Amazon Lilly.
Rayleigh is known as Roger's Right Hand, yes. Is that all of Rayleigh's hype and portrayal? No.
- Considered to be of the same threat level as the strongest of the Emperors, by Garp The Hero
- Fought Kizaru on par after not having picked up the sword in years
If Whitebeard mid-diffs Oden, that means there's a huge gap between them. If Whitebeard, high-diffs Oden, that means there's a decent gap between them. So what do you mean it doesn't matter here? Loll.
- No people don't remember he sailed with Roger. Only veteran marines like Sengoku, who kept great Intel, knew he accompanied the Pirate King on his last voyage to Raftel.
Strawhats knew Rayleigh by name.
Same strawhats had no idea about Oden & relation to Roger.
Sakazuki, the current Fleet Admiral, only knew Oden as being one of the division commanders of Whitebeard's crew:
It was Sengoku, a veteran marine, who kept great intel, who let him know that Oden accompanied Roger to the final voyage:
The guy who Roger called his "partner" vs a mere division commander. Do tell me how you logically find them to be even comparable. If Oden was some great super duper top tier that could challenge the big dogs of that era, he wouldn't just be known as a mere division commander on Whitebeard's ship.. Especially if he was on par with Rayleigh.