A system provides for fuzzy classification in comparisons of scanner responses. A web application test suite performs tests against a web application by sending client requests from a testing computer to the server running the web application and checking how the web application responds. A thorough web application security scan might involve thousands of checks and responses. As a result, some sort of programmatic analysis is needed. One such evaluation involves comparing one response against another. Response matching that compares two HTTP responses might use fuzzy classification processes.