The light in Jabari's eyes seemed to dim significantly, however, Dyon didn't let him fall from the skies. Instead, he grabbed a hold of his thick wrist, letting him dangle from the skies. He didn't really care to kill Jabari now or not, in fact, he was likely more useful alive.
One might wonder how a man with a blade in his head could be alive, but the truth of the matter is that even a wound like this is possible to be recovered from if you're a high level body cultivator. It's just that Jabari won't have any strength to do anything else for a good long while, which cut the enemies of the Angel Clan down by one second grade warrior, which was a decent return in Dyon's opinion.
That said, where Dyon truly benefited was the morale boost he just gave the Angel Clan and the shadow he placed over the hearts of the opposing army. His message was clear: 'If the crown prince of an emperor god clan can't match up to someone decades younger than him, what chance do you all have?'