head to head
vs
Mortal Kombat: ArmageddonvsX-Men: Next Dimension
Mortal Kombat: Armageddon leans Execution (Competitive PvP); X-Men: Next Dimension leans Execution (Competitive PvP).
Mortal Kombat: ArmageddonX-Men: Next Dimension
Axis by axis
Execution7 vs 7
Even - both lean on execution about the same.
Reads6 vs 6
Even - both lean on reads about the same.
Variance1 vs 2
X-Men: Next Dimension leans harder on variance: Little randomness in deterministic fighting engine
Optimization5 vs 4
Mortal Kombat: Armageddon leans harder on optimization: A 62-character roster of matchup knowledge to internalise
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.