For the Word Devil, there is never any direct comparison between him and demon Licht. However it is noted constantly that the Word Devil himself is far and above all the rest in his battle with Yuno, Asta, Patry, Licht, and Lumiere in terms of mana amount and Yami notes during his battle with the Word Devil that his spells grow stronger the more Mana he puts within them. While this doesn't set the Word Devil up with Demon Licht it does put him above the rest of those involved in his battle, one of which was capable of combating Demon Licht. And once again, said demon would have to survive his own attack since he's naturally within the blast radius of said attack.
That's what I found