The two curricula are incomparable. A CT MS is academic; the courses are formal college courses, independent of a sponsoring corporation and its commercial S/W products. The role it prepares you for is IT management. Certificate programs prep you for staff level work, as an implementer.

Here are the 3 possible curricula for the GT program:

Core: Introduction to Information Security (CS 6035) Information Security Policies and Strategies (PUBP 6725)

Info Security Track: Applied Cryptography (CS 6260) Secure Computer Systems (CS 6238) Network Security (CS 6262) Information Security Lab (CS 6265)

Energy Systems Track: Smart Grids (ECE 8803) Introduction to Cyber-Physical Electric Energy Systems (ECE 8803) Introduction to Cyber-Physical Systems Security (ECE 8803) Computational Aspects of Cyber-Physical Systems (ECE 8803)

Policy Track: Introduction to Information Security (CS 6035) Information Security Policies and Strategies (PUBP 6725) Information and Communications Policy (PUBP 6502) Privacy, Technology, Policy and Law (CS/MGT 6726) Internet and Public Policy (PUBP 6111) Scenario and Path Gaming (INTA 6014) Data Analytics and Security (INTA 8803) Information Policy and Management (PUBP 6501) Challenge of Terrorism in Democratic Societies (INTA 8803 G)

I think it's a valid question since the CISSP seems more geared to managers, not "staff-level work." The most common advice I've seen about answering questions for the CISSP exam is "think like a CEO."