Board Thread:Speculation House/@comment-10380701-20131018004029/@comment-3146930-20131221221654

I agree, as some characters seem to have a better grasp of their Aura then others. Lie Ren for example is able to focus his Aura into a single point in order to create a stronger shield. He is also able to use this shield offensively, pushing the snake's fang away from himself and into the snake, killing it. Other characters like Nora, Weiss, or Ruby don't seem to have as much of a grasp on Aura and rely heavily on their weaponry or Semblance. Weiss is possibly the strongest Semblance user we have seen (as far as students go), but we haven't seen her use any kind of Aura ability. Ruby doesn't really seem aware of her Semblance, as there are a few times where her speed could have been used and she didn't use it. She as well hasn't been shown to use Aura.

It could just come down to how a character is trained. Pyrrha for example is very skilled in Aura and has a lot of knowledge about abilities in general. She was most likely trained in improving these skills at a young age. Jaune however has no formal training to speak of and despite having a lot of Aura, he doesn't seem to be able to use it; as shown by the constant beatings he gets from Cardin. When he turns on Cardin for example and Cardin starts hitting him, Jaune clearly has a bruise under his eye which his Aura should have prevented. However it is his Semblance that protects him from that last hit, not his Aura (as stated in the DVD commentary).