Summary
Ahsoka's lightsaber form and double blades gave her an edge against Maul, allowing her to defeat him in battle.
Qui-Gon's failure to defeat Maul can be attributed to his defensive approach, as opposed to Ahsoka's aggressive tactics which effectively countered Maul's chaotic style. While Maul's strategic planning initially served to his advantage against Qui-Gon, it ultimately proved to backfire when he encountered the unexpected opponent, Ahsoka, resulting in his defeat.
The final arc of season 7 of Star Wars: The Clone Wars showcases one of the most satisfying storylines, as Ahsoka Tano emerges victorious in her battle against Darth Maul during the Siege of Mandalore. Ahsoka and Maul's shared history as former apprentices gives their confrontation a unique dynamic. What makes this outcome even more remarkable is that Ahsoka achieved what many other Jedi could not. Despite the revered skills of Jedi Master Qui-Gon Jinn, he was defeated and killed by Maul in Star Wars: Episode I - The Phantom Menace. In contrast, Ahsoka, despite never becoming a Jedi Knight, managed to defeat and capture Maul.
It is worth mentioning that Qui-Gon's lack of training specifically in fighting opponents with lightsabers may have contributed to his defeat against Maul. At that time, most Jedi believed the Sith were extinct and did not prioritize honing their combat abilities. Their overconfidence over centuries had caused their skills to diminish. Although Qui-Gon did have the opportunity to learn and train through a preemptive duel with Maul on Tatooine, Ahsoka's upbringing and training during the Clone Wars provided her with constant experience in lightsaber combat. However, Ahsoka's success over Qui-Gon cannot be solely attributed to her training.
Ahsoka's Lightsaber Form Was Perfect For Beating Darth Maul
Qui-Gon Jinn's proficiency in the Ataru lightsaber form prioritized defense over offense. Although this allowed him to hold off Maul in The Phantom Menace, it proved insufficient to secure victory. Conversely, Ahsoka, following in her master's footsteps, employed Djem So, an aggressive and offensive form. By specializing in a form designed to counter other lightsaber users, Ahsoka gained the upper hand against Maul's chaotic Juyo lightsaber form.
Ahsoka's advantage over Maul extended beyond her choice of lightsaber form - her mastery of dual blades also played a pivotal role. Unlike Qui-Gon, who struggled to block both of Maul's blades due to only wielding one lightsaber, Ahsoka was evenly matched with Maul as they both wielded two blades. At the climax of their duel, Ahsoka may have lost both of her sabers, but she ingeniously turned Maul's own attack against him, ultimately defeating him.
Darth Maul Used Qui-Gon's Environment Against Him - But Couldn't Do The Same With Ahsoka
Maul's superior planning and prior exploration of Naboo played a significant role in Qui-Gon's failure to eliminate him. Maul strategically engaged the Jedi by luring and separating them within the forcefield corridor. Unlike Qui-Gon, Maul utilized the knowledge gained from their previous duel on Tatooine to devise an effective countermeasure against his opponent. Specifically, Maul skillfully maneuvered Qui-Gon into a confined area that limited the latter's ability to fully utilize Ataru for defensive purposes.
During the duel between Maul and Ahsoka on Mandalore, the unexpected presence of someone like Ahsoka greatly disadvantaged Maul, resulting in an unfavorable outcome for him. Maul had initially anticipated the arrival of his longtime rival, Obi-Wan Kenobi, and Anakin Skywalker to Mandalore. However, he had not foreseen Ahsoka's participation. Ultimately, although Ahsoka and Maul displayed equal skill and ability, the combination of her lightsaber form and the surrounding environment ultimately contributed to her victory over Maul in Star Wars: The Clone Wars.