head to head
vs
Naruto Shippuden: Ultimate Ninja Storm 4vsPower Stone
Naruto Shippuden: Ultimate Ninja Storm 4 leans Reads (Competitive PvP); Power Stone leans Execution (Competitive PvP).
Naruto Shippuden: Ultimate Ninja Storm 4Power Stone
Axis by axis
Execution5 vs 6
Power Stone leans harder on execution: 3D arena movement and item pickups reward quick reflexes.
Reads6 vs 6
Even - both lean on reads about the same.
Variance2 vs 3
Power Stone leans harder on variance: Random item drops genuinely swing rounds.
Optimization4 vs 4
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.