User blog comment:B214/Question and Answers/@comment-50.11.177.49-20130806210323/@comment-14738352-20130807045612

Come on! You cannot compare Cao cao to Great Red!!

Even Ophis in her original state cannot get rid of GR from the Dimensional Gap by herself and needed to recruite several powerful Sacred Gear users to help her.

BTW, if a longinus can kill a God, then destroying the world is not out of the question if a powerful user wills it.