Kure Raian from Kengan Ashura Vs Gun from Lookism

I've been an avid reader of lookism eversince it was recommended to me by a friend awhile back. I've gotten through most of it though I stopped reading it cuz I got bored after Guns backstory.

Compared to Lookism my experience with Kengan ashura is what you'd call recent, though I have been enjoying reading "K.A."

I couldn't help but wonder who would win in a fight between the two black eyed powerhouses raian or gun?