Originally Posted by kael03
He was hit by the same shit that is preventing Minato from regenerating his arm, and it took out his entire upper half. That's the mystery.
There shouldn't be a mystery. When Hiruzen got hit with the black shit it was a four element combination just a step above Oonoki's Jinton. But when Minato got hit in the arm Obito had evolved and gained essentially a 7 element combination. all 5 elements plus natural energy and whatever jutsu access to nullify jutsu. two totally different attacks!