Use a CMS when content governance is the job.
CMS platforms are strong at roles, drafts, localization, content schemas, previews, and scheduled publishing. They are the right home for repeat editorial systems where humans are clearly steering the content lifecycle.
Use a launch room when delegated proof is the job.
Launch rooms are strong when a personal AI agent creates or updates a page and the operator needs to verify why the work was allowed, what sources supported it, and whether the release is actually ready.
CMS strength
Structured content, roles, previews, drafts, scheduled publishing, and editorial history.
Launch room strength
Approval provenance, source grounding, browser evidence, failed-link reporting, and release receipts.
Best pattern
Use the launch room to approve the agent’s work, then publish into the CMS or static host.

The launch room wraps the CMS
It does not need to replace the publishing system to add trust.
Super context
Super is closer to the launch room side of the market because the agent can start from a request and move into execution. The result may include a website, text update, or browser task, so the proof layer needs to span more than one CMS record.