Zombie Jesus, because, frankly, it was in his zombie state that he started showing feets of strength like moving boulders around and stuff anyway. Before that it was just food tricks and the like. Cyborg Moses would rely on technology too much, and Jesus could just run out onto some deep water and Cyborg Moses would have a lot of his weapons systems shorting out. He could then be slain. And even if he did manage to off Zombie Jesus, Z.J. could just come back again because he has God backing him up. Moses doesn't have that kind of support. He's a favorite, yes, but he doesn't get more lives. Definately Jesus.
Yes, but don't forget that Moses was pretty good with water while he was a mere human. Now he is a cyborg and I'm guessing that just made him a lot faster. And what! This is between Z.J. and C.M. God will not ridicule himself by openly backing his son.
(The "Yikes and away thing" - about 3:50 in - still kills me.)
And I DID forget about Moses's water thing. He could part the sea and drop Z.J. a long way to the sea bed. As for God, He could back Z.J. without making a big fuss. I mean, he has his back before as a zombie, in fact, he made him into one to begin with, so, it's totally His idea.