The review mostly consists of a smart summary, followed by a pertinent criticism: In continuing to stress the "primacy of the subject" Hatfield asks whether the book then "duplicates, albeit in a radical and ethereal form, the crucial logic of Latin Americanist identitarianism." I'd answer "maybe," especially in that I think it is worth defining a Latin American multitude.
It then ends with some very flattering words:
Posthegemony is a book of major theoretical importance and profound political and disciplinary implications. It ranks high within the crowded field of recent work on the relationship between culture and politics in Latin America. Beasley-Murray’s book will be a main point of departure for our most important debates for many years to come.