I look at INTJs as being more like Sherlock Holmes (Cumberbatch version, anyway). At first I thought Holmes was an ISTP, because of how good he is at noticing sensory details (certainly not an INTP, as we tend not to notice if we have shampoo in our ears), but I finally got a handle on Ni as being a function of "hunches" and INTJ made more sense. The Te "fact oriented" practicality can look a little Se, I suppose.
Plus, not to stereotype here, but a lot of people think of ISTJs as being a little robotic. My father is an ISTJ, and I see that a little. Apologize if I offended any ISTJs!