As Milly Alcock's Supergirl prepares for her solo film, we compare the powers, backgrounds, and potential of Kara Zor-El and Clark Kent. While Superman has experience, Supergirl's Kryptonian upbringing may give her greater raw power.
The DC Universe is expanding rapidly, and with Milly Alcock 's debut as Kara Zor-El in the final moments of 2025's Superman , fans are eager to see her take center stage in the upcoming Supergirl movie.
This raises a timeless question: which Kryptonian cousin is more powerful? Both Superman and Supergirl draw their abilities from Earth's yellow sun, granting them super strength, flight, invulnerability, enhanced senses, super speed, heat vision, freeze breath, and accelerated healing. Yet despite sharing the same baseline powers, their origins and life experiences create intriguing distinctions that the new DCU is set to explore. Supergirl's background may actually give her an edge in raw potential.
Unlike Superman, who was sent to Earth as an infant, Kara spent her entire childhood on Krypton before its destruction. She grew up under Krypton's heavier gravity, which in comic lore suggests her body developed more density and resilience. Upon arriving on Earth and absorbing yellow solar radiation, that early conditioning could translate into greater physical power.
Additionally, her trauma from losing her homeworld and everyone she loved is a deep well of emotion-one that makes her more impulsive and less restrained in using her abilities. The upcoming Supergirl movie, heavily inspired by the Supergirl: Woman of Tomorrow comic, portrays her as a survivor struggling with intense loss, which influences her approach to heroism. She might not hold back as Superman does, making her more dangerous in a fight.
On the other hand, David Corenswet's Superman has a decisive advantage in experience. Clark Kent has spent nearly his entire life on Earth, learning to control his powers with careful restraint. He knows the limits of his strength, the precision required for heat vision, and the responsibility that comes with being a symbol of hope. That maturity gives him an edge in tactical combat and public perception.
While Kara may have more raw power potential, Superman's decades of practice mean he can use his abilities more efficiently. He has faced countless villains and learned from each encounter, making him a more seasoned hero. The DCU will likely explore how these two Kryptonians complement each other, with Clark's discipline balancing Kara's raw emotion. Ultimately, the question of who is stronger may not have a simple answer.
In terms of raw physical might and untapped potential, Supergirl may surpass her cousin due to her Kryptonian upbringing. But Superman's experience and mastery of his powers give him a different kind of strength-one that is measured and precise. The new DCU films are poised to showcase both heroes in their full glory, with Supergirl bringing a rougher, more visceral edge to the franchise.
Whether she ultimately proves more powerful than Superman will depend on how her character grows and the challenges she faces. One thing is clear: the DCU has two incredibly powerful Kryptonians, and their dynamic will be a cornerstone of the new cinematic universe
Supergirl Superman DCU Power Comparison Milly Alcock
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