Superman is physically stronger. He has superhuman strength, can lift incredible weights, is nearly invulnerable, and has numerous other powers like flight, heat vision, and super speed.

Batman is a peak human with no superpowers—his strength comes from extensive training, intelligence, tactical skills, and technology.

However, Batman has defeated Superman in various storylines (like *The Dark Knight Returns*) through preparation, strategy, and exploiting Superman's weaknesses (kryptonite, magic, psychological tactics). So while Superman has far greater raw power, Batman can win under the right circumstances with planning.

In a spontaneous fight with no prep time, Superman wins easily. With preparation, Batman has a fighting chance.
