Salesforce ecosystem integration, what specifically does SFCC give that AC can’t replicate?

An existing Salesforce environment may make particular connections useful, but verify the exact product and flow. Salesforce B2C Commerce and B2B Commerce have different architectures; shared branding does not establish that every customer and order record is automatically synchronized. Demonstrate the required identity, service, order and marketing journey, including permissions and failure recovery. Compare it with an explicitly designed Adobe integration. The decision is the value and maintenance of that workflow, rather than an unsupported claim that another platform cannot reproduce it.

Official references: Salesforce commerce product lines; Current Salesforce B2C integration developments.