rainbow dash shows more honesty during the show , mostly throught being brutally honest , where as applejack is ig too polite to tell the honest truth if it might hurt the others feelings? like in yakity-sax , where she was the one that told pinkie pie she lowkey sucks at the yovidiphone bc no one else wanted to. and applejack shows more loyalty like staying loyal to her family/family traditions like in super speedy cider squeezy 6000, where she refused to give in to flim and flams machine thingy to keep the integrity of the cider using the family recipe, or in apple family reunion where she really just wanted to make the reunion special for her whole family. or when spike owed his life to aj and she really didnt want hi as her servant but couldnt js say no to him because it meant so much to him. i can see rainbow dash having potential to be loyalty when she decided to quit wonderbolts academy because lightning dust almost hurt her friends just to be the best and she thought thats what the wonder bolts were looking for. or when her rude griffin friend gilda came to ponyville and started being a megarude to pinkie but rainbow chose pinkie, one of her best friends over random chick she used to know. she also mostly js speaks her mind throughout most of the show. however i can also see applejack not really suiting loyalty when she didnt win a single blue ribbon in the last roundup and she js decided to dip and go work on a cherry farm, but that also didnt show honesty because she lied ab winning. and obv also friendship is magic pt2 when they all got their elements and applejack told twilight the truth that she wouldnt fall and die, and rainbow dash not giving into shady scammer shadowbolts yadayada. thats js my thoughts on it w a few example but theres prolly more throughout the rest of the show and some of rbd not fitting honesty. in my opinion theres more examples of them making more sense switched idk
i hope thats not wayy too long of a paragraph lolol