Correct. No doubt that Erdei is the true lineal champ. Michalczewski won 3 of the 4 belts, and was #2 when he beat #1 (and the only reason he didn't win all four belts was because he and Rocchigiani were both stripped of titles). Just 99% of people don't give a crap because Erdei's been fighting creampuffs and mandatories for years.
Yeah, but he was holding a world title, not some regional belt. He needs to fight the toughest competition, regardless of continent.