The top Delta looks more like what's generally considered 'normal' for a furry, hence another reason why that one would be the impostor. It's not an Among Us reference as much as it is an allusion to real life, where people are forced to hide their true selves, like Delta does here, in order to fit in and seem 'normal'. The bottom Delta definitely seems more discriminated against and hurt, given the bandages, which is tragic, but, unfortunately, realistic.
Delta definitely needs a hug.