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.

Execution · Practiced Mastery
An anarchic open-world crime sandbox about rebuilding the Saints and reclaiming Stilwater.

Execution · Practiced Mastery
An open-world racing MMO about collecting cars and cruising Ibiza and Hawaii.
Saints Row 2 leans Execution (Practiced Mastery); Test Drive Unlimited 2 leans Execution (Practiced Mastery).
Test Drive Unlimited 2 leans a little harder on execution, though the gap is small.
Saints Row 2
Gunfights, driving, and activity minigames test moderate dexterity
Test Drive Unlimited 2
Open-road car control decides races
Test Drive Unlimited 2 leans a little harder on reads, though the gap is small.
Saints Row 2
Gang AI follows simple fixed behaviour
Test Drive Unlimited 2
Online rivals add mild jockeying
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Saints Row 2
Sandbox chaos adds mild unpredictability
Test Drive Unlimited 2
Traffic and weather add small noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Saints Row 2
Respect economy, stronghold takeovers, and activity completion are systematic
Test Drive Unlimited 2
Car choice, upgrades, and route knowledge compound
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.