HaKatan: Of course I would consider the NK member who is otherwise observant in all areas of halachah to be more frum than your MO example.
Don’t paint me out to be a left-leaning MO type just because I harshly criticized the NK. The analogy I was making is more specifically this:
There are a lot of Dati Leumim who habitually ignore the Rabbonim when it comes to Zionism, but they are otherwise fully observant. Then there’s the Neturei Karta who habitually ignore the Rabbonim when their actions are condemned, but, again, they are otherwise fully observant. I think to weigh in on which one of these too groups would be more frum just comes down to our own biases. I just can’t bring myself to call someone a Torah Jew who shakes hands with the Ayatollah at a Holocaust denial conference.