Final answer:
Superman vs Thor: Both characters possess formidable powers and abilities, making it difficult to determine a clear winner.
Step-by-step explanation:
In a battle between Superman and Thor, it is difficult to determine a clear winner as their powers and abilities are both formidable. Superman possesses superhuman strength, speed, and invulnerability due to his alien physiology and exposure to Earth's yellow sun. On the other hand, Thor is the Norse god of thunder and wields the mighty Mjolnir, a hammer that grants him control over lightning and weather. Both characters have been portrayed differently in various comic book storylines, making it subjective to determine an outcome.