In my opinion it is worth. It have more list, and a campaing system with events.
The book have the following list:
-Chariot era and before: early egypt; old and middle egypt; summer & Akkad
-Ancient greece and the east: Peloponesian wars; the selucides
-The raise of Rome: Celtiberian; the judish revolt; late republican rome; Meroe; Numidian; Palmyrian; Sarmatian
-The Dark ages: The arabs; arthurian british; the bulgars; Carolingian Franks; celtic Ireland; The rus; themathic bizantine; Visigoth
-The Far East: Quin China
As all warmaster stuff, this book is delicious and very coherent with the other supplements