No, both have many primitive supersttitions that have no basis in science and reason.
Not that I can see
There is no room for superstitions in monotheism if you believe in one God form your whole heart that's what matters, A firm believer of God doesn't care about superstitions, But I agree polytheism is far more superstitious because they try their lucks by believing in existence of many God's, So it's normal for them to being superstitious.
Belief in any gods is a superstition. Belief in one god is no better than belief in many, regardless of your apologies for one god. (Aton of Egypt was the first single god on record. Both momotheism and polytheism are wrong, because gods do not exist.