Darth Vader's suffered some pretty dire losses in Star Wars canon — yet there's always been an excuse for them. Losing the Death Star plans to the rebels in Rogue One: A Star Wars Story was tough, but that could be chalked up to the incompetence of those beneath him. When he fell to the dark side as Anakin Skywalker in the prequel films, he was roasted and left for dead on Mustafar, but that was because he wasn't prepared.
View original article here Source