Supergirl: Woman of Tomorrow has confirmed that Supergirl's Krypton trauma is far worse than Superman's. For a long time, emphasis has been on Superman's trauma of losing Krypton, primarily because the character has been around longer and first established Krypton. Therefore, creators have had more time to explore Superman's relationship to his lost home world. However, if things are put into perspective, Supergirl is far more connected to the now-exploded planet than her cousin.
Supergirl lived her childhood on Krypton until the planet exploded when she was fourteen. Superman has almost no recollection of Krypton, despite being born there. This is because he was sent to Earth in his space pod when he was a baby. Therefore, because all of his memories are from Earth, it's almost impossible that he remembers Krypton. Obviously, Superman can look back on his home planet nostalgically by imagining what he's been told about it, but he can't actually recall it.
In an interview with Screen Rant, writer Tom King confirmed that Supergirl: Woman of Tomorrow will explore Kara's trauma of losing her family in Krypton's explosion. In King's own words, his version of Supergirl isn't a new one, but "a pure version of her." King said he is stripping all the many versions of Supergirl down to the core original character Otto Binder created, whom he based off of his daughter. Binder's daughter tragically died but lived on in the fictional character of Supergirl. So exploring Supergirl's connection to what makes her unique from Superman makes complete sense. Supergirl is the one survivor of Krypton who remembers exactly what the planet and its people were like.
Naturally, Supergirl is scarred by Krypton's destruction as it saw the death of everyone she knew. Friends, family, her home, she lost everything. While Superman may miss the idea of Krypton and reminisce on what it may have been like, Supergirl actually remembers the planet. Her link is far more real than Superman's, especially in terms of the trauma caused by witnessing Krypton's explosion. Tom King claims that part of the series will explore, "the idea of a woman who, unlike Superman, didn't just survive a Holocaust; she witnessed the Holocaust. She was 14 when she saw her planet, all of her friends die, and her parents die.”
In Supergirl: Woman of Tomorrow's two issues so far from King, artist Bilquis Evely, colorist Matheus Lopes and letterer Clayton Cowles, Kara's alien friend Ruthye has brought up these old wounds many times already. Ruthye's loss of her father is a fresh wound for her. Naturally, Ruthye is curious about Supergirl's reaction to losing her entire family. These comments have forced Supergirl to linger on her memories of her family and Krypton. It's clear that Supergirl has yet to overcome her trauma and will possibly never fully resolve it. Ultimately, Superman has little trauma about his home planet's destruction compared to Supergirl, as he can't even remember his life on Krypton. Supergirl: Woman of Tomorrow #2 is available in comic book stores and on digital platforms now.