head to head
vs
BioShockvsGrand Theft Auto: Vice City
BioShock leans Execution (Practiced Mastery); Grand Theft Auto: Vice City leans Optimization (Practiced Mastery).
BioShockGrand Theft Auto: Vice City
Axis by axis
Execution5 vs 4
BioShock leans harder on execution: Shooting and plasmid timing required.
Reads1 vs 0
BioShock leans harder on reads: Splicers scripted; behaviors fixed.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 5
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.