The Comprehensive Copywriting Academy is very specifically about copywriting. The CCA will help you learn to write copy and then build your copywriting career as a freelancer, at an ad agency, or on staff as part of an in-house agency team. (See below for more information about what copywriting is.)
The Freelance Success Framework (FSF) covers the fundamentals of being a freelancer. No matter what service you're offering (graphic design, bookkeeping, social media management, web development, or corporate wellness consulting, etc...) the FSF will help you consistently land clients who need your service. The FSF does not teach you skills related to your service provision. (Check out this page for more on freelancing.)
In short: the CCA teaches copywriting fundamentals with a dive into how to start a copywriting business. The FSF teaches you how to turn a skill you've already mastered (copywriting or otherwise) into a successful freelance business.