Wow, seems like the guy has a legitimate claim to me. It may be nit-picking, but he attempted to reproduce the exact same scenario as the tested BC scenario, and could not. Now you may not care if your bow is exact, but it sounds like he had much contact to attempt to buy exactly what he wanted. In my opinion, he did not get what he paid for, and apparently he even asked for before and verified the speed before he bought it. If he has a complaint about that, it is well within his right to do so. I am sure there is another side to the story, but he seems justified with the issue.

The mustang seems like a poor analogy, as he is apparently trying very hard to exactly reproduce the results obtained at the factory, and none of us drive at constant speed at optimum efficiency, or even attempt to.

Just my opinion, let the beatings begin,
JMAC