1. User Authentication: Django-allauth provides a more extensive user authentication system compared to django-registration, offering social account authentication, 2-factor authentication, account management, and customization options.
2. Customization: Django-allauth allows for more customizable features including templates, URLs, authentication methods, and layouts, while django-registration has limited customization options.
3. Documentation: Django-allauth has more comprehensive and up-to-date documentation with a larger community support compared to django-registration.
4. Third-party Integration: Django-allauth seamlessly integrates with popular third-party services and APIs for additional functionalities, while django-registration may require additional plugins or custom development for such integrations.
5. Account Management: Django-allauth provides more advanced account management features such as email verification, password reset, user profiles, and account deactivation, which may be limited in django-registration.
6. Maintenance and Updates: Django-allauth is regularly maintained and updated with new features and security patches, ensuring better long-term support compared to django-registration.

In Summary, Django-allauth offers a more comprehensive and customizable user authentication solution with better support and features compared to django-registration.