To start off, I reiterate that SSL3-only servers should autofail the whole test. At this point, I consider your the tester to be basically broken until this is fixed.
Mozilla now disables SSL3 by default in the stable Firefox 34.0.5 release as well as Firefox 31.3.0 ESR. Google will be disabling SSL3 by default in Chrome in the near future as well. Please fix the reference browser settings used for the "Handshake Simulation" portion of the test to show the correct results. Currently, it uses Firefox 32 & Firefox 24.2.0 ESR, both out-of-date. These need fixing to use current versions which fail to connect to SSL3-only servers.
A generic "Protocol or cipher suite mismatch" would be sufficient. Something to the effect of "Firefox has SSL3 disabled by default" would be more precise, if desired. (not NSS; the change was in PSM)
Specific test-case I hit to discover this: