Board Thread:Mortal Kombat X/@comment-4222221-20140620142209/@comment-4809082-20140730232251

Anything could have happened, but the flashback indicates that the fight was somehow decisive. In MK:A it was because after that Taven traveled through the portal to Edenia, but as we know Taven didn't won, the flashback is strong evidence that the fight made all the difference. Also, showing Raiden dealing with Darkness.

I don't think Taven would had thought that way, Raiden's promise was to stop Taven. If he defeated without killing, he would let Taven the chance of waking up and going to battle, so the dem-god maybe never thought of that because he got fried.