head to head
vs
Gran Turismo 5vsGrand Prix 4
Gran Turismo 5 leans Execution (Practiced Mastery); Grand Prix 4 leans Execution (Practiced Mastery).
Gran Turismo 5Grand Prix 4
Axis by axis
Execution8 vs 8
Even - both lean on execution about the same.
Reads1 vs 2
Grand Prix 4 leans harder on reads: AI drivers follow scripted lines, not adapting to you
Variance1 vs 2
Grand Prix 4 leans harder on variance: Weather and grip add some unpredictability per race
Optimization7 vs 7
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.