Personally, I really don't concern myself much with who might or might not be lying. It's mental energy that could be put to better use elsewhere, like on my own front sight. Besides, there are some superb shots out there, and, ridiculous claims notwithstanding, I'm inclined to give the benefit of doubt.
FWIW, numerous times here and elsewhere, I've posted some actual targets (generally Fun and Postal Matches), and even posted a couple vids on youtube (MrBorland1) doing some trigger control drills, so viewers are welcomed to draw their own conclusions.