How do you suppose you're gonna figure out how one character from one universe is gonna hurt the characters from another universe without knowing their limitations?
Of course you can know the limits by comparing their best feats.
Attack Potency is the deciding factor to estimate someone's destructive capacity. It is simply the energy of each force; and it's also important for durability and unless Juudara is a glasscanon - which is not the case in the manga - his durability is also on par with his AP. On the other hand, you tried to refute this connection by listing an anti feats and this is the part when you were wrong. I will explain more later on:
It's not an outlier anti-feat.
It is if we consider the fact that he took Naruto's Lava Rasenshuriken and was still one piece; this attack wasn't also capable of bisecting all his cells like it should have done. It's already a durability feat which far surpasses his anti feat.
Sword stabs do not mean much if we consider the fact that far weaker characters like BM Naruto survive entire freaking nukes and other devastating techniques. A less durable character like the 3rd Raikage literally tanked a Rasenshuriken without injury. The latter is internal damage on cellular layer.
Also, I already brought up another example why this is one of many anti feats:
You can see how bullets apparently hurt some high level Dragon Ball Super characters, yet these anti feats do not mean much in the grand scheme of things.
We all know how ridiculous this would be if we used this anti feat against DBS characters.
Also, have you ever thought that Sasuke simply channelled his Sot6p chakra into his sword to stab him?
Hell, we have one instance when The Last Naruto blocked a beam - which cut the moon in half - with his mere chakra arm. So again, how does a stab wound negate all of that?
It's well-known fact Naruto characters are nowhere near as durable or sturdy as OP characters.
Well, in all those popular battleboards I've been in, I always saw the contrast that OP characters got shitstomped by Nardo god tiers.
And yes, in terms of durability, this was the case as well.
Madara is far more durable than Naruto characters but he's nowhere near the most durable guys in the OP verse.
But he practically is by feats.
He scales to Hagoromo and Hamura.
His durability is linked to his AP, unless he is a glass canon.
Madara endured and took attacks from Sot6p Naruto and Rinnesharingan Sasuke.
Madara has the ability to heal himself, so he's not exactly enduring everything.
It doesn't make sense considering the fact that his body would tore apart if his durability was too weak; yet he was taking all these attacks and later on regenerated these as well.
Similar to Kaido who took damage but regenerated from that. Causing superficial damage isn't the only important thing, durability is more than just having a tough steel-like body which always tanks everything with 0% damage.
And you of all people should know endurance and durability are two different things.
But these things go hand-in-hand.
If Madara can take attacks which have planetary force, he'll take attacks on smaller scales much easier.