I'm thinking that Soara would dispatch Micah quicker than Koon would Obi Wan, and I don't think Koon could fight off what amounts to basically two AOTC Obi Wans.
Plo could kill Kenobi via the force, not sure how skilled pre-TPM Plo is though.
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk