User blog comment:Zathronas/Analysis by an author-Hiatus Edition: Jaune Arc/@comment-25405817-20141119163359/@comment-25405817-20141119173356

Yeah, the aura acts passively as a force field for all aura users, though it needs to be trained for it to become stronger, That's why Weiss could survive a chainsaw to the waist but Tukson couldn't receive a shot/kick to the face. The Semblance is more unique for each character. All this is according to the World of Remnant episode found on V2 DVD.

The article with the transcript is on the wiki.