User blog comment:MilitaryBrat/Lord Voldemort vs Darth Vader/@comment-4661256-20111216214351/@comment-4552610-20111216221455

I don't know how well Avada Kedavra against a being pulsing with the Force. Hell, maybe Vader can move magic with the force. If Vader is right and "The ability to destroy the planet is insignificant to the power of the Force,", Voldy's magic won't do much good.