The main difference between typical source code testing tools and beSTORM is that beSTORM does not require the source code. beSTORM tests the protocol rather than the product and can therefore be used to test extremely complicated products in a large scale.
Another key differentiator is the accuracy of beSTORM's reporting. beSTORM checks the application externally by triggering the attacks and vulnerabilities and only reports issues if an actual attack has been successful.
In comparing beSTORM to tools that run a certain number of case studies or scenarios ,beSTORM performs millions and sometimes billions of attack combinations as compared to thousands or tens of thousands of case studies.