A phrase used by over enthusiastic Christians when things go wrong, where they work out, what Jesus, son of God would do if he was in your situation, forgetting that they can't do anything that Jesus can do.
Guy: My wife ran away with Judd, I lost my job and now i can't feed my 5000 kids! What would Jesus do?!
Guy 2: Probably use his magic powers to smite the traitor and feed the 5000 kids with a loaf of bread and half a fish...
Guy: Awww shit...
Derived from the Christian slogan 'What would Jesus do?'.
Instead refers to what choice Kratos from God of War would make to solve his problem.
i.e. Kill in the most violent way possible
Reasons why this is much more realistic are Kratos doesn't:
Turn water into wine,
Feed 5000 people,
Cure blindness or leprosy
Walk on water.
He kills his problems with his hands.
Guy: Zack stole my wife! What would Kratos do?!
Guy 2: Probably rip off his head