His conclusion:
I heartily recommend this book to any person lay or scholar who is interested in Gospel and or Synoptic studies – if you are for Markan priority I think it is even more important you read this book – why? Because too often Markan priority people make comments like the quote I gave above from Stein and to save yourself from embarrassment read this book – it’ll at the very least make you a more informed Markan priorists.