head to head
vs
BioShockvsFinal Fantasy XV
BioShock leans Execution (Practiced Mastery); Final Fantasy XV leans Optimization (Practiced Mastery).
BioShockFinal Fantasy XV
Axis by axis
Execution5 vs 4
BioShock leans harder on execution: Shooting and plasmid timing required.
Reads1 vs 1
Even - both lean on reads about the same.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 6
Final Fantasy XV leans harder on optimization: Ascension grid, magic crafting, party planning
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.