Virtual Reality — since it can simulate future scenarios — is more useful for training in advance. For example, before you make a trip.
Augmented reality is more useful for “just-in-time” training/translation.
Once the just-in-time experience becomes good enough and discreet enough, I suppose most people won’t want/need to train in advance.
So, I’d say that VR has the greater potential over the next few(?) years, but AR has greater potential long-term.