as thou hast done. Sodom does not mean Jerusalem here, but it refers to the Sodom of Genesis 19. Sodom had not Jerusalem's privileges: hence her transgression was less. Compare Ezekiel 16:46, and Matthew 11:20-24.
Related Commentaries of Ezekiel 16:48
Ezekiel 16:48
48 As I live, saith the Lord GOD, Sodom thy sister hath not done, she nor her daughters, as thou hast done, thou and thy daughters.