Hi Sandy,
Well, UFT (Microfocus) tool has wider-range possibilities than SOAP UI or Postman (Swagger is for RESTful API so valuable for AC Standard but not for AC Classical which is SOAP API oriented).
Not only UFT can more or less do the same as SOAP UI.
But it can also capture/generate the test scenario from the application user interface, for some supported applications, and web oriented applications, and generates the tests scripts.
Nevertheless, I don't know if UFT supports ACC (Windows app), probably useable for ACS which is web oriented application.
Please ask to Microfocus about ACC support.
(FYI, UFT can import SOAP UI projects).
SOAP UI automation of calls of Web Services can be used to achieve test scenarios (free edition), and in the commercial/premium edition, load performance scenarios as well (equivalent to UFT LoadRunner).
So SOAP UI is developer oriented.
Briefly said, depending on your use cases, SOAP UI (or Postman) is enough or not.
Please read ACC JS API and you will have an idea of what can be automated or not.
Hope this helps.
Regards.
J-Serge
