User blog comment:Miskos3/Fairy Tail Episode 236: Tartaros arc Prologue: The White Inheritance, Review/@comment-24277053-20150606121714/@comment-25111584-20150606133227

Not losing twice to the same opponent in a serious fight is not really unique to Natsu tho. It pretty much holds for everybody in FT.

Gray actually said this about himself too. I guess he counts Zero and Brain as different people or counts those battles as against OS and Zero. :P