A 'part' of Jamie's full power, was a High-Tier Deity. This meant Jamie's real body back in his home Universe was at a far higher level.
"What's your main body's realm?"
"You know about the 'Zenith Haven'?"
Jamie replied his question with another and Arthur shook his head as he had never heard of that Existence Realm. The most he knew was Lucifer's realm before his death—Grand Supreme—so he asked a different question.
"How far off is that from 'Grand Supreme'?"
"It's two Realms above it."
It turned out that Jamie's real body was even stronger than Lucifer was.
Moving on, it was finally Arthur's turn for the introductions.
"Arthur Vaughn, Hell Universe's resident Progenitor godslayer. Oh, I'm a Prince too.
