Star Wars: Attack of the Clones introduced Jango Fett as one of the most badass bounty hunters in the galaxy. He was so impressive in fact, that he served as the genetic template for the Grand Army of the Republic. What's more, Jango even stood up to Obi-Wan, despite not being a Force user. And yet, when it came to his final showdown against Mace Windu on Geonosis, Jango met a swift end when the Jedi Master swiftly decapitated him. Although his end was unceremonious, and even anticlimactic, a subtle detail may explain why Jango lost so quickly.
Source：https://www.cbr.com/jango-fett-jet-pack-caused-defeat-star-wars/
