head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Practiced Mastery
Tests drift-boost technique and city-route optimization against a fare timer.

Execution · Practiced Mastery
The PS1 driving opus where picking and tuning the right car for each event matters as much as driving it.
Crazy Taxi 3: High Roller leans Execution (Practiced Mastery); Gran Turismo 2 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Crazy Taxi 3: High Roller
Crazy dash and drift chains under the timer are pure technique
Gran Turismo 2
Clean braking and lines matter, aided by forgiving AI.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crazy Taxi 3: High Roller
Passengers and traffic don't adapt
Gran Turismo 2
Rolling-start AI follows fixed pace scripts.
Crazy Taxi 3: High Roller leans a little harder on variance, though the gap is small.
Crazy Taxi 3: High Roller
Fare spawns vary slightly run to run
Gran Turismo 2
Used car lot rotation is minor randomness.
Gran Turismo 2 leans a little harder on optimization, though the gap is small.
Crazy Taxi 3: High Roller
Map routes and shortcut knowledge separate scores
Gran Turismo 2
Car selection, tuning and prize-money routing dominate the career.
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.