head to head
vs
Angry Birds RiovsNieR
Angry Birds Rio leans Optimization (Practiced Mastery); NieR leans Execution (Practiced Mastery).
Angry Birds RioNieR
Axis by axis
Execution4 vs 5
NieR leans harder on execution: combat timing and dodges matter
Reads0 vs 0
Even - both lean on reads about the same.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization6 vs 5
Angry Birds Rio leans harder on optimization: Finding each level's optimal shot sequence is the game
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.