Put simply, age does not equal power, even in Star Wars. People can grow stronger and wiser over time, but they also accumulate weaknesses and blind-spots. Star Wars is full of young, idealistic people defeating older villains who are seemingly stronger but whose arrogance or miscalculations lead to their downfall. Anakin, Luke, and Rey all defeated Sith who spent decades honing their connection to the Dark Side. The Sith Emperor in Star Wars: The Old Republic is over a thousand years old, but is still defeated by the Outlander. Even in the first Jedi Knight game, Kyle Katarn is several decades younger than his main adversary, Jerec. Everyone must fall sometime, and usually to someone younger and less experienced than they are.