- the concept of Dark Triad traits is overused early 00's pop psychology
- it's like BMI: fine for applying to a large population, but breaks down when looking at an individual
- even if useful at the individual level, "dark triad" indicates three traits but says nothing about the balance between them, e.g., a high mach and a low narc pairing will looking very different than two high machs.
IMO it is not useful to oversimplify any single relationship down to "two dark triads".
It actually surprises me to see 46/33. Gut feel, I would have put it closer to 60/20.