Captain Cadaver said:
Having the attack power to severely damage the bodies of pillar men is all the proof necessary as for how great his destructive capability is. Saying he didn't present the strength feats when scaling makes up for it would be the same as saying Cell isn't a planet buster because we never saw him do it, or using the 40 tons argument to say why Boo Arc characters would lose to people far below planet level.
It doesn't work like that. We know the pillar men are horribly weak to hamon. Joseph managed to wound Wamuu with his cracker volley pre training, am I to believe that cracker volley could bust a house down? The pillar men are simply weak to it, that's all. Hamon is something that ignores their durability. Otherwise we would end up with humans having higher higher than building level durability because hamon doesn't severely injure them, which is obviously a ridiculous thing to say.
Also the idea of scaling in shows like DB or One Piece doesn't work well with JoJo. Not only JoJo stopped being a series that relied on brute force to win fights and focused on out smarting the enemy to win ever since part 1 ended, like I said, Hamon is something that ignores the durability of vampires and pillar men. It doesn't translate well into destructive capacity. I'd say it's more like "Hax" against Pillar men.
Captain Cadaver said:
Leaving aside a lot of that being unsubstantiated, there's sufficient evidence of Joseph being a big threat to Dio and supporting the idea of his young self being above him in Part 3. Dio clearly saw there was some level of precaution to be taken in attack Joseph directly due to his Hamon, and this was an old Joseph who'd been out of practice for years. Though Dio wasn't at full power due to Jonathan's body not being fully under his command yet, such is doubly so for a very rusty Joseph.
This is even further apparent of how much regard Dio treats Jonathan is when he disposed of a Hamon expert like Dire as though he was nothing.
Dio underwent character development and came to fear hamon in part 3 after looking down on it and getting defeated by it in part 1. But I disagree with Joseph > Part 3 DIO because stands are way above hamon. Young Joseph would win against Oldseph in a fight, but against DIO, Old Joseph would stand a better chance than Young Joseph, because Old Joseph has tools to deal with DIO and his stand whereas Young Joseph doesn't. This is another reason why the classic power-scaling doesn't work well in JoJo. It's better suited for series that rely more on brute force(Bleach, One Piece, Dragon Ball, Naruto...etc).
Captain Cadaver said:
Also, if we're comparing feats, compare someone on par with Joseph like Caesar surviving a direct hit from Wammu's Divine Sandstorm (albeit, with fatal wounds) and still being able to move to Jonathan being completely defeated by Dio's Space Ripper Stingy Eyes, an attack that should logically have far less energy. Even taking into account Jonathan being off-guard, there's no way the latter attack's power can compare to the former.
This is where power-scaling can work. We do know Caesar and Joseph are quite close in strength so if Caesar could survive the divine sandstorm, so can Joseph. However, as obvious as it is, it's a durability feat and not a destructive capacity one. They even note that it has incredible power so I don't think Joseph and Caesar can reach Wamuu's output of attack potency.
Also, I assume you're referring as when they were on the ship, right? Dio's attack is way weaker than Wammu's, that much is true. But what you have to realize is that it's way more precise than the divine sandstorm, Dio aimed right at Jonathan's throat, which prevented him from using hamon. Wamuu's attack has more power but lacks precision; it's an attack which hits all over the body. Also IIRC didn't Jonathan die because he was unable to breathe?
Captain Cadaver said:
Hamon can still work to amplify his attacks and durability, as seen when used on those who aren't vampires and pillar men and on himself for protection. Even if not as potent on humans and the like, it's not completely useless.
Can it? I don't remember. Care to show an example?
And yeah, Hamon isn't useless against humans but it took hamon x100 stronger than Joseph's so that it could melt human flesh. With his hamon, Joseph wouldn't do a lot to OP, DB, HxH characters except maybe knocking them out cold.
TLDR; I don't think Joseph damaging Pillar men with his hamon can be counted as destructive feat, when its more like "hax" against them. Power scaling, it doesn't work well. It only works with Vampires, Pillar men, Zombies and Jonathan because the chain is Pillar men > Vampires > Zombies and Jonathan showed physical feats to beat Dio, a vampire and because Part 1 was more oriented towards brute force fighting. Saying Joseph > Jonathan would be true only in some contexts, such as fighting vampires and pillar men, because Joseph's way to deal with them(Hamon) is much better than Jonathans. But against an opponent who hamon doesn't quite work against in a straight fight(like Kid Goku for example), I'm inclined to say Jonathan has more chances of winning than Joseph does because he showed better strength feats.