This makes much more sense than your previous response.
When you have unexpected results, you need to examine you assumptions and the methodology behind them.
You can't simply dismiss the results out of hand. In your examples of code coverage, or fast file transfers, you need to dig deeper, not dismiss the results out of hand.
For instance, testing the Object.toString() function (although I'm not sure how you'd test that) is something that could result in abnormally high test coverage. Also, when you transfer a file quite quickly, is the OS doing any sort of compression on the data? Is it only for that file? How lossy is the transfer? Etc etc.
Simply dismissing the results out of hand because they disagree with your preconceived notions of reality is wrong.
Japanese scientists were convinced that the beriberi epidemic was due to germs rather than a nutritional deficiency because that was the prevailing notion of the day.
Try this one: https://mindhacks.com/2016/12/08/rational-judges-not-extrane...