[Dénes Bernád]

I would add on the top of what Jim has so rightfully summed up that these "dishonest", "unreliable", "overclaimer" and similar derogatory epithets tend mostly to be thrown at German pilots. Perhaps as a faint effort to vent frustration over the fact that there were so many successful German fighter pilots, whose reputation must be tarnished by suggesting that many of those 'kills' did not (could not) actually happen...