It's not that I think you're lying. But really, how can you expect to effectively market against a competitor with the influence of JWT w/o a straight up comparison? Sure, you've got good word-of-mouth sales going. But most products have objective comparisons (often third-party) to influence customers.
With the confidence you have in your ECU, you should be motivated to test it. From all the testimonies I've read about it, I believe it will do better than JWT..but nothing compares to an objective dyno test. So take your time and do the test right...and bring witnesses =)