A person who is psychologically fairly normal and balanced would react very differently to the protagonists of these two short stories. Montresor begins by accusing Fortunato of a "thousand injuries," but we never learn what these were, and Fortunato appears to think that they are friends when he follows Montresor trustingly into the catacombs. Montresor, therefore, appears as a monstrous figure, someone who is boasting that he has managed to murder an innocent man in one of the most hideous ways that can be imagined.
Aurelio is a very different type of person from the proud, aristocratic, and insane Montresor. He is a humble "dentist without a degree." He clearly has reason to hate the mayor, though we never learn anything about the "twenty dead men" to whom he refers, or how responsible the mayor is for their deaths. This, however, is still more specific than the grievance Montresor claims to have against Fortunato. A dentist clearly has unique opportunities to cause terrible pain, and the reader is likely to wince at the sadistic pleasure he takes in extracting the mayor's tooth without anesthetic. However, if the mayor really is responsible for the deaths of twenty men, it is a rather mild punishment. The mayor also reasserts his power and reveals his corruption at the end of the story, when he tells Aurelio that sending the bill to him personally or the town is "the same damn thing." The average reader, therefore, is likely to find Aurelio a much more relatable and sympathetic character than Montresor.