head to head
vs
Grand Theft Auto IVvsMafia II
Grand Theft Auto IV leans Execution (Practiced Mastery); Mafia II leans Execution (Practiced Mastery).
Grand Theft Auto IVMafia II
Axis by axis
Execution5 vs 4
Grand Theft Auto IV leans harder on execution: Heavier driving and cover shooting reward control.
Reads1 vs 0
Grand Theft Auto IV leans harder on reads: Scripted AI, no adaptive opponent modeling.
Variance2 vs 1
Grand Theft Auto IV leans harder on variance: Minor mission variance.
Optimization3 vs 4
Mafia II leans harder on optimization: Modest; learning encounter layouts
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.