This intro doesn't say what the CV comparison feature is good for. You're not comparing functionality; you're comparing the contents of two different content view versions. You can compare packages, errata, and other content types across any two content view versions. This is helpful when you want to know what changed between two versions.

Reported by: rhn-engineering-jlenz

https://access.redhat.com/documentation/en-us/red_hat_satellite/6.13/html/managing_content/managing_content_views_content-management#annotations:27ceba7c-bcec-4140-b75a-9e30f0f4c6c8