On the comment to this question, a guy said that
those weren't TRUE lightsabers. They were training-level sabers.
These lightsabers look real (with saber length adjustment) to me which can do real damage including killing. How else can you build a glowing stick which can be turned on or off like the lightsabers Jedi or Sith own? On the other hand, this is the galaxy far far away we are talking about in which technology is comparable to magic.
I want to know from the canon (with proper citation): Could those lightsabers do real damages including death? Were they stripped down versions of the "true" lightsabers which Jedi or Sith own?