Better than 50.5% accuracy actually doesn't sound that implausible, but I will note that if Omega is probabilistic then the way in which it is probabilistic affects the answer.
Sure, I was reading the 50.05% in terms of probability, not frequency, though I stated it the other way. If you have information about where his predictions are coming from, that will change your probability for his prediction.
Fair point, your're right.
EDIT: I see by the karma bombing we can't even ask. Why even call this part of the site "discussion?"
Some of the classic questions about an omnipotent god include