Kidd ate most attacks from a Top Tier than everybody else in this war (excluding Luffy, who lost 4 times) so I dunno what you talking about when you say Kidd didn't show he can handle pain.
On top of my mind, he endured a stronger stab than the one who made Zoro faint in Ringo.
Depends on how hard top tier is hitting random punches and one sword attack from big mom doesn't cut it.
Hakai alone packs far more punch than combined attacks Kidd tanked.
AdvCoC thunder bagua does as well I would say.
Issue was Kidd didn't tank any respectable attack besides arguably mother misery on panel but Law took it as well.
You can't go off of edge case feats because by that logic Luffys endurance would cap at apoo blast.
We need to look at best feats since endurance is literally ability to tolerate pain with will power. Zoro walking off 40 broken bones was so crazy Law was sweating looking at zoro saying "You are insane roronoa", Kidd as far as we never never even walked off few broken bones.
Ikkoku is much more dangerous than some adv. CoC punches and Kidd took it. Even here you got some nerve to say it didn't touch him
Ikokou is first of all not comparable to advCoC thunder bagua and secondly it never touched Kidd it only touched his armor otherwise where is any damage from Ikokou on Kidd?
He does a damn lot with Awakening considering he can make a Top Tier feel the pain unfelt since centuries, he can also break top tier bones with it and overpower defensive adv. CoC.
Well that doesn't mean much when said top tier hasn't taken any real damage in a while.
Scabbards did no real damage to kaido but it was still most damage he took in years and it gave him PTSD.