[mahmud]

Is it possible to run some test suite to independently confirm that the performance are superior?

Just think harder about that question. It raises all sorts of philosophical questions about machine, intelligence, language and meaning.

Of course, there ARE benchmarks, at least one bundled with each classifier tool ;-) but there couldn't be one ideal benchmark, no.

This might give you a start though:

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.38.4...