Some of it is not just intelligence it is also spiritual blessings, Christians too have this spiritual blessing the Christian nations have spiritual blessings they prosper as a people, they discover new land and make good science and technology. Many scientists of the past found their discoveries through prayer and revelations, through dreams and impossible coincidences that lead them to that path.

As for the Jews they are a minority on earth, they win great battles for their survival, the Old Testament is based on a few of them winning great wars against all odds, it is funny how Einstien a Jewish decendant founded nuclear energy and this became a weapon of defence for Israel to this day. They won the 6th day war with enemies on all sides and it is said the next great war of Gog and Magog will involve all surrounding nations again in which they will win and the current instability in the Middle East points that it could go that way, Israel will win probably without lifting a finger.