Yeah I think durability is linked to your will in the one piece universe
I don't think Oden was as strong as those two now but I also believe that the situations seem to parallel eachother
Theres a big over all emphasize on fire and burning in this arc
To me I think one piece is pretty straightforward and not that subversive when it comes to the general plot
So when something like this is that emphized I take it as it's just goin be that way
Well, that's it. Luffy officially defeated Kaido and I really doubt he's get up again underneath the country while the eruption is wasting him and Big Mom up. I dunno, maybe Big Mom could save herself by betraying Kaido there but I see no chance for Kaido.
Also, ZKK is dead too.