In Greek mythology, Achilles was a demigod hero who was impervious to harm everywhere except for his heels. Achilles' armor was made of enchanted gold. Hercules is also a demigod hero from Greek mythology. As the child of Zeus, he possessed many god-like gifts, most prominently his superhuman strength.
Spider-Man and Batman are Marvel and DC Comics characters, respectively. Spider-Man has the strength to kill a villain, but has the self-control to pull his punches. Batman is a martial arts expert and often defeats his enemies in hand-to-hand combat.
Chris attended University College, London, where he received his degree in Ancient World Studies. Greek and Latin were his focus, which explains his knowledge of Achilles and Hercules. He can be seen showing Batman pride on Carpool Karaoke and he helped film a romantic scene for The Amazing Spider-Man.
The singer’s significant-other responds to his self-doubts. She is trying to assure him that while he may not be extraordinary, he is more than enough for her. She’s contrasting the unreliability of a hero with the dependability of the singer.
Achilles (died young), Hercules (many adventures, few girlfriends), Batman (billionaire playboy), and Spiderman (girlfriend killed by a villain) were all lousy romantic partners.