From the OVERVIEW:

Overview

The ESV Global Study Bible is a one-volume study resource for globally minded Christians everywhere. It has been designed from beginning to end to be highly accessible and value priced for distribution on a global scale.

The Global Study Bible features a fresh design, with a wide range of new features. Each book begins with an introduction, followed by a unique, insightful description of the global message of the book. Likewise, a set of new articles by global Christian leaders apply the Bible to global issues, such as the role of government, the nature of the church, world religions, social ethics, and missions and evangelism.

The Global Study Bible’s notes and maps were adapted from the best-selling ESV Study Bible and contain a wealth of information about the biblical text, history, and geography. With overviews of each Bible book, special facts, and character profiles, the Global Study Bible is an outstanding resource for Christians everywhere who seek to know and understand the truth of the Bible and its global meaning.

A couple of screenshots to give a comparison.  In some cases notes are similar,  in other cases Global Study bible is almost a summary of the standard study bible notes, book introductory material has similarities but differences as last screen shot shows.