It has always bugged my how those lightsabers work differently in the Star Wars trilogy. One moment Obi-Wan chops off an aliens arm in Ep.4 and Vader chops off Luke´s hand in ESB... and then we have Luke on the sail barge chopping all over the place in ROTJ and nothing ever happens to the victims, no arms or legs get chopped off even though he slashes at them directly - they are just "pushed slightly" and fall into the Sarlacc. And then in the same movie he cuts off the front end of a speeder bike with ease! How can this be? Can´t there be some sense of continuity in this for christ sake?