cyttorak vs onslaught vs odin (all full potential and max)

no prep (fight take place inside death realm)

I say Odin wins. 

Onslaught might win, if he has Frank's powers. Not sure on this. 

odin is a galaxy buster. he should win this if cyttorak is outside the crimson cosmos.

So is Cyttorak basically a skyfather level outside of his realm? I'm asking because I've always been confused as to how powerful he is. Some say he's skyfather, others say he's celestial level, and some even say he's above celestial level.