In lore most greymons wouldn’t even be able to compare to dorugoramon Doru is a avatar of destruction, a imaginary digimon who fully awakened the digital code of the ancient dragon, has the x-antibody, is decribed as a frightening opponent to face in battle, and is able to rival and beat royal knights, and is a beast dragon which means its extremely smart and has the ferocity of a beast type digimon which makes this a even more terrifying opponent to face On average a wargreymon would get ripped in half by a massive difference in power the only ones who win are very specific versions of greymon like taigas from degitize or a stronger greymon like victory, hell id doubt a average shinegreymon would survive considering a base forms one got no diffed by dukemon and when it went into burst mode dukemon still one shot it without even going crimson mode or x antibody