Building comparison
head to head
Gran Turismo 4vsTony Hawk's Underground
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.
Gran Turismo 4
Execution · Practiced Mastery
An encyclopedic driving simulator spanning 700 cars and decades of automotive history.
Tony Hawk's Underground
Execution · Practiced Mastery
A story-driven skateboarding game still won by trick execution.
Gran Turismo 4 leans Execution (Practiced Mastery); Tony Hawk's Underground leans Execution (Practiced Mastery).
Gran Turismo 4Tony Hawk's Underground
Axis by axis
Execution8 vs 8
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Gran Turismo 4
Hundreds of cars all demand precise inputs
Tony Hawk's Underground
Combos plus off-board tricks keep the input ceiling high
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gran Turismo 4
Fixed-line AI offers no adaptive opposition
Tony Hawk's Underground
Story missions are scripted, not adaptive
Variance1 vs 0
Gran Turismo 4 leans a little harder on variance, though the gap is small.
Gran Turismo 4
Deterministic outside slight tyre wear modelling
Tony Hawk's Underground
Fixed levels and mission scripts
Optimization7 vs 6
Gran Turismo 4 leans a little harder on optimization, though the gap is small.
Gran Turismo 4
Event-by-event car and tune selection is deeply solvable
Tony Hawk's Underground
Mission and score-line routing remain solvable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.