User blog comment:B214/Question & Answers 5/@comment-82.199.209.161-20160302154156/@comment-26345952-20160302222136

I always thought that Vali did not use his power directly to Loki because even though he is the strongest White Dragon Emperor, his body would not be able to handle half the power of a god, he was not srong enough for that kind of absorption (At least that what I think).

Though Kokabiel was one of the leaders of Grigori and a strong foe, Vali is both the decendant of Lucifer and the Hakuryuuko, I think he had the advantage (even though it was played for the pourposes of development, introduction to a new character, and plot convenience), for an angel never reached the level of God or Maou as far as we know. If they could Michael would handle the system in Heaven a little bit easier, dont you think so.

However I think the EJOD mode is able to take the powers of a god with more ease.