You have an Azure AD tenant that contains the users shown in the following table.

To compare and analyze role permissions of multiple users within an Azure AD tenant, the correct and most efficient tool is the Microsoft Entra admin center.

According to the Microsoft Identity and Access Administrator Study Guide and Microsoft Entra documentation, the Entra admin center provides the Roles and Administrators blade where administrators can:

View all directory roles.

Compare role permissions and assignments.

See which users have which roles and what each role allows.

The guide clarifies:

“Administrators can use the Entra admin center to view and compare role definitions and assigned members without using additional portals or manual PowerShell scripts.”

The other options serve different purposes:

Microsoft 365 Defender portal focuses on security incidents and threat management.

Microsoft 365 admin center handles licensing and user management but not detailed role comparison.

Microsoft Purview compliance portal deals with compliance, data governance, and auditing.