User blog comment:B214/Volume 22 spoilers/@comment-112.198.82.246-20170217114129/@comment-31137559-20170221143330

It's not Vali's heritage, but his immense demonic powers that gave him such an edge. While that is tied to him being the descendant of Lucifer, his heritage doesn't matter.

For example, Sairaorg was born a Bael, yet he didn't receive high demonic powers or the Power of Destruction. And Ajuka who was an Astaroth yet he was blessed with immense demonic powers.