Board Thread:Episode Discussions/@comment-1181222-20161222144543/@comment-25122992-20161223191741

And what of it? Sasuke didn't use Chidori to destroy the tornado instead of PS, he just jumped into the eye of the storm (which was the technique's weakness) and knocked out Fushin with it. It's not like Sasuke tried to use the raw power of Chidori to clash with the tornado head to head. This was a pretty rational desision, since it required less efforts.