If James is saying that every world is equally real, then does he have to accept that contradictory sentences are equally true? Suppose for example that in the world of science “God does not exist” is...

If James is saying that every world is equally real, then does he have to accept that contradictory sentences are equally true? Suppose for example that in the world of science “God does not exist” is true, but in a supernatural world “God exists” is true. Then must James accept that God both exists and doesn’t exist? Would this make any sense?