I'd say that Ni-doms in general can manipulate, change and to some degree control the way that other people see them...they can switch their outward personality according to a situation, and don't mind doing that if it helps them to achieve something important....while INTJs appear more "what you see is what you get" type (in social situations), they usually have a complex inner vision that drives their behavior.
also INTJ can easily and naturally understand how external factors can change and influence how things work(for example, applications of physical and mathematical laws, etc.) while it's a lot harder for them to understand social dynamics (which they adapt to very well anyway because of Ni-Te).
For INFJ's it's the other way around - they understand how social dynamics work and constantly change their behavior to adapt to it, but they don't have such natural adaptation to external/objective logic - sure they can understand logic too, but they have to derive their logic subjectively unlike INTJs.