The Same Darkness Ball with mini output imbued with WoB, just caused vaporized effect.
The Smokes Darkness magic that Have EE even erased Walhberg's Robe, the Darkness Blast from IZ doesn't erased Mash's Clothes. It's not the same.
This Darkness Blast doesnt have same Effect as when IZ against Walhberg but just Fragmented the ground.
It's definitely a hit but doesnt erase Ochako anyway.
This is not Outlier or Consistent Inconsistencies, the Darkness Magic can just be retconed. Darkness magic only have the EE effect when Adam wield the Wand is more reasonable.