The answer depends entirely on how you define "stronger" and what the circumstances of the fight are. In the world of DC Comics, this is the ultimate debate.

Here is the breakdown of why each character can be considered the winner:

### 1. Raw Power: Superman (The Objective Winner)
In terms of physical attributes, there is no contest. Superman is a solar-powered god.
*   **Strength:** Superman can move planets, fly through suns, and bench-press the weight of the Earth for days. Batman is a human in peak physical condition but is limited by human biology.
*   **Speed:** Superman can move faster than light; Batman has fast reflexes, but he is stationary by comparison.
*   **Durability:** Superman is invulnerable to almost everything except magic and Kryptonite. Batman can be killed by a single bullet if it hits the right spot.

**Verdict:** In a weightlifting contest or a "no-prep" street fight, Superman wins in less than a second.

### 2. Strategy and Preparation: Batman (The Tactical Winner)
Batman’s "superpower" is his intellect and his distrust of anyone with too much power. He famously keeps a "Justice League Buster" plan for every member of the team, including Superman.
*   **Kryptonite:** Batman almost always carries a ring or a gadget made of Kryptonite to level the playing field. 
*   **Psychology:** Batman knows Clark Kent’s personality—he knows Clark is inherently good and will likely hold back his full strength to avoid killing a friend. Batman, conversely, is willing to use brutal methods to win.
*   **Resources:** With enough "prep time," Batman uses red solar radiation lamps, sonic weaponry, and powered exoskeletons (like the one seen in *The Dark Knight Returns*) to bridge the physical gap.

**Verdict:** If Batman has time to plan, he can neutralize Superman's powers and win the mental game.

### 3. What do the comics say?
While they are best friends, they have fought many times in DC history:
*   **Batman wins in:** *The Dark Knight Returns* (Frank Miller). Batman uses a suit, help from Green Arrow, and Kryptonite to beat Superman into submission.
*   **Superman wins in:** *Wonder Woman #219*. After being mind-controlled, Superman stops holding back and nearly kills Batman, proving that if the "gloves are off," Batman’s gadgets cannot save him.
*   **The "Hush" Arc:** Batman fights a mind-controlled Superman and admits in his internal monologue: *"If Clark wanted to, he could use his superspeed and squash me into the cement. But I know how he thinks. Even more than the Kryptonite, he's got one big weakness: deep down, Clark's a good person. And deep down, I'm not."*

### Final Conclusion
*   **Physically:** **Superman** is infinitely stronger.
*   **Tactically:** **Batman** is more dangerous.

Most fans and writers agree that **Superman is the stronger hero**, but **Batman is the better fighter.** Superman usually wins if he chooses to, but Batman wins because Superman is ethical enough to let him.
