This is King Piccolo COB, aka, the mean Piccolo If it were the other Piccolo, I would've voted for him on the basis of being the better parent
Anyway, here's my thoughts:
Well Raven scales to a 84 megaton feat, Piccole scales to a 97 megaton feat, however, that was his strongest attack, and Raven's was done casually, so they're probably even in AP
Raven is vastly superior to a mach 11, Piccolo is vastly superior to a mach 20+ feat, so he has a slight edge in speed
Piccolo's immortality and body manipulation will make him a tough opponent to kill, so he should take it in the endurance and stamina department. But Raven's aura is a tough thing to beat, since it both protect her and regenerates damage.
However, Raven has the versatility advantage what with all her elements at her disposal, but her portal creation takes too much time to be of any use, same for her bird form
But, I think Raven just gives Piccole the Cinder treatment by freezing him solid, but this time, she shatters him instead of letting him fall to his (apparent) death. Or used any of her others elements to put him down, which she is willing to spam in character
