It's a close call, but between the ages of 17 and 18, it appears that the former is the strongest. He has consistently demonstrated his willingness to fight and prove his worth in battle. If you ever faced 18 in a one-on-one fight, it would be the safest bet. Many of 18's appearances in Dragon Ball Super suggest that she spends most of her time with her husband and daughter, having embraced her husband's humanity and rarely participating in the action. Goku found 17 and was immediately involved in a fight with aliens over the island's animals, giving viewers an idea of what 17's daily life is like.
In addition, 17's ability to keep up with Goku was a sign that he trains regularly. Along with all the remaining members of Team Universe 7, Android 17 faced a lightning fight with Agnilasa, and even then, Agnilasa almost overwhelmed Team Universe 7.Ignoring Android 16's plea, 17 rushed to Cell with great fury, but Cell effortlessly threw the trusting Android to the ground with an elbow. When Goku and Frieza sacrificed themselves to defeat Jiren, Android 17 was the last fighter standing and, in turn, the winner of the tournament. Thanks to Future Trunks' medicine that reduced the effects of Goku's heart virus, androids were able to focus first on their mission instead of sticking with the Z fighters who were left as they were in the future. Android 17 asked who was struggling, but Android 16 said that neither of them was in its databases, although one of them rivaled potential Android 17. In a preview of Android 17's appearance in Dragon Ball Super, he is known as the most powerful Android, whose power exceeds the definitive one after more than a decade of difference since his previous appearance. Android 16 then revealed that he was never human, making him fundamentally different from Android 17 and Android 18. However, Vegeta told Trunks that the explosion didn't make sense, since Android 17, Android 18 and the camera containing Android 16 had survived. Piccolo and Android 17 fell to the ground again after fighting in the air for a long period of time.
In the anime, Android 17 teamed up with other members of the Dragon Team to defend their planet from the Core Area Warriors. A curious and excited Goku exclaimed that he wanted to test Android 17's current power and transformed into a Super Saiyan, wanting strong friends to help him in the Tournament of Power and rushing to attack him without warning. Thanks to his continuous efforts to protect his island, Android 17 gained enough strength to become the star of Dragon Ball Super's Tournament of Power and one of the biggest surprises in the series. When Jiren regained his strength, Android 17 was able to fight Jiren alongside Frieza and Goku, acting as support by firing numerous bursts of ki at Jiren to cover Goku and Frieza's approach.
