Both Most Likely Dispersed From Anatolia Into Europe. However Some People Think That E-v13 Characterized Paleolithic Southern Europe. J2a4d Is Believed To Arivved With The First Human Settlers In Crete Over 9000 Years Ago. I Believe They Both Entered The Balkans In The Neolithic, But I Cant Tell You Which Was First, Although Check The Haplogroup Pages On This Site, There Are Plenty Of Theories On Both.