Younger? So? Anakin was younger than Obi-Wan, Obi-Wan and Anakin were way younger than Dooku, ESB Luke was younger than Vader, etc.
Faster? Possibly, but this is debatable. Vader moves very quickly and gracefully towards the end of Dark Lord, and takes out five Jedi in a few moments. He also proceeds to baffle and defeat Jedi Master Roan Shryne, a 'swordmaster' who was one of a few Knights and Masters thought to be Council material.
Stronger? Lmfao!