Ah, gotcha. I got confused but you just used my wording. Regardless, you're still assuming with that comparison.
I was just applying "hype" of my own to show why you can't use it to convince someone else, because it's subjective. Clearly you didn't accept my assumptions, just like I didn't accept what you said about Wootz. What I'm really getting at is that they aren't equivalent feats and shouldn't be transferred between each other automatically like you are doing. Maybe Wootz armor is tougher than Daz's DF and maybe cutting a small steel knife is also an equivalent feat, but those would be assumptions again.
I mean, I can go around making any assumptions I want to just like you. They're not good for forcing a point (like breaking Wootz = breaking Daz's body) because if I'm trying to convince other people they won't necessarily accept the same assumptions. I can illustrate this by saying:
1) Hachi's got steel swords. Because steel is referenced as "sword metal" by Zoro, and Arlong's crew is probably not running around with weak swords for their top men. Hachi called himself the "second strongest swordsman from Fishman Island" (the first being Hyozou), so I doubt he is using anything weaker than steel.
2) Zoro couldn't cut those swords at this point in the story, but they clearly broke. Therefore he broke them by
sheer force.
3) Daz Bones' full-steel body is too thick to break by force, just like the cage in Orange Town. So he had to learn to cut clean right through.
Of course, you won't accept those assumptions for a multitude of reasons, chief being it runs counter to the point you're trying to make. But in the same way, you can't expect everyone to just accept your assumptions like "breaking Wootz armor = breaking Daz's body", "Luffy couldn't break bars but became strong enough to do so in a few chapters", etc.
As an aside: what we do have in the story to compare Wootz vs DF is that Wootz survived like 3 or 4 east blue Luffy bazookas before breaking. Meanwhile Daz Bones actually stopped one attack by the WSS meant to kill Luffy:
Comparing Wootz to Daz Bones is just sus. Sure, you can do it with a set of very specific assumptions, but I wouldn't use it as some lynch pin for evidence in other arguments. Because to me and other people, there is no intention at all in how Oda wrote these two things to make them comparable feats. It's disingenuous to compare them. Krieg was at no point stressed as being impervious to sword slashes in the same way Daz was. Krieg was still a fodder villain at this point in the story and Luffy didn't really have issues or need to get stronger. Alabasta was the first time Straw Hats were portrayed as being underdogs and had to struggle seriously.
I'm probably done with this because it's severely off-topic and probably not essential for whatever points you're trying to make. You can argue that Luffy would find a way to beat Daz, anyways. I just specifically have an issue with saying that breaking Krieg's gear is equivalent to breaking that DF, because it requires hand-waving away a few things and accepting a lot of assumptions and runs counter to how these two things were presented narratively.