Good points. We do have comparisons with most existing TCP solutions out there (at least the ones we were able to get a hold of). I did not put them up because I did not want to drown people in information. But I should put up a white paper that has more detailed test results.
By the way we do beat the the Linux TCP stack (which now uses Cubic TCP, afaik). The data shown on the site is Compound TCP, which is the current windows implementation.
Let me know if you would like to see the detailed test results.