Definitions for "Differential advantage"
A property of any product that is able to claim a unique-ness over other products in its category. To be a differential advantage, the uniqueness must be communicable to customers and have value for them.
Something desired by the customer that only one company-not its rivals-can offer. p. 328
An attribute of a product or service highly desired by targeted customers and not currently offered by rival companies or products. p. 262