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

Optimization · Practiced Mastery
The genre-defining 3D open-world crime game set in Liberty City.

Optimization · Practiced Mastery
A slapstick co-op moving simulator about hurling furniture into a truck against the clock.
Grand Theft Auto III leans Optimization (Practiced Mastery); Moving Out leans Optimization (Practiced Mastery).
Moving Out leans a little harder on execution, though the gap is small.
Grand Theft Auto III
Driving and clunky gunplay set a modest physical bar
Moving Out
Physics carrying, throwing, and steering under time pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto III
Enemies are scripted; nothing models the player
Moving Out
No adaptive opposition; pure co-op chaos
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto III
Pedestrian and traffic chaos lightly randomises encounters
Moving Out
Ragdoll physics adds slapstick unpredictability
Moving Out leans a little harder on optimization, though the gap is small.
Grand Theft Auto III
Mission routing and city knowledge are learnable systems
Moving Out
Routing furniture and splitting tasks drives gold times
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.