In raw, physical strength and power, **Superman is much stronger**—he’s a superhuman alien with abilities like super strength, speed, flight, heat vision, and near-invulnerability.

**Batman** is a peak human with no superpowers, so he’s not “stronger” in the literal sense. However, Batman can **defeat Superman in certain stories** because of:
- **Preparation and strategy**
- **Kryptonite and other tech**
- **Exploiting Superman’s restraint/morals**
- **Specific circumstances** (Surprise, red sun radiation, magic users assisting, etc.)

So: **Superman is stronger.** **Batman can sometimes win.**
