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

Execution · Practiced Mastery
A team arcade racer with no finish line, scoring takedowns and objectives in a rolling stampede.

Execution · Practiced Mastery
An open-world racing MMO about collecting cars and cruising Ibiza and Hawaii.
Onrush leans Execution (Practiced Mastery); Test Drive Unlimited 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.
Onrush
Boost management and aerial takedowns need car control
Test Drive Unlimited 2
Open-road car control decides races
Onrush leans a little harder on reads, though the gap is small.
Onrush
Team-based human opponents in stampede modes
Test Drive Unlimited 2
Online rivals add mild jockeying
Onrush leans a little harder on variance, though the gap is small.
Onrush
Chaotic pack collisions and fodder spawns
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.
Onrush
Class roles and rush timing are learnable
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.