Board Thread:Versus Debates/@comment-34938099-20180718121304/@comment-34194151-20180724060941

Except the plentiful Amaterasu created by Itachi around the battlefield significantly increased the amount of heat available to form those thunderclouds. Amaterasu is hot enough to burn through a fire resistant toad stomach as shown in Part one. Hebi Sasuke doesn't have access to amaterasu, so that significantly increases the time/effort required to setup Kirin. Its not like kakashi is just gonna stand there while sasuke takes his time aiming fireballs at the sky.