head to head
Dead or Alive 2vsNidhogg
Dead or Alive 2 leans Reads (Competitive PvP); Nidhogg leans Reads (Competitive PvP).
Dead or Alive 2Nidhogg
Axis by axis
Execution6 vs 7
Nidhogg leans harder on execution: Sword-height changes and dive-kicks need quick hands
Reads8 vs 8
Even - both lean on reads about the same.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization4 vs 3
Dead or Alive 2 leans harder on optimization: Environmental launch routes and stun knowledge are studyable.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

