User blog comment:Rafe Adler/Best Cliffhanger This Season of Arrowverse/@comment-3423279-20160530043011/@comment-28835160-20160530171328

Dhark's would have only destroyed Earth 1, but if he had succeeded he would have killed Barry who stopped Zoom from destroying the multiverse so I guess so, but if Zoom was on E1 when Dahrk destroyed it then it would only be E1 destroyed.