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
Vehicular mayhem testing car handling plus knowing when wrecking beats racing.

Execution · Practiced Mastery
Combat racing that tests driving under fire and smart upgrade economy between races.
Carmageddon II: Carpocalypse Now leans Execution (Practiced Mastery); Death Rally 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.
Carmageddon II: Carpocalypse Now
Perfect car control trivialises wrecking AI opponents and surviving
Death Rally
Top-down driving and aiming under fire decide races
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Carmageddon II: Carpocalypse Now
AI drivers follow set behaviours, never modelling the player
Death Rally
AI rivals follow patterns, not your mind
Death Rally leans a little harder on variance, though the gap is small.
Carmageddon II: Carpocalypse Now
Pickup spawns and physics chaos add modest run-to-run noise
Death Rally
Pickup spawns and rival aggression add run-to-run chaos
Death Rally leans a little harder on optimization, though the gap is small.
Carmageddon II: Carpocalypse Now
Choosing wreck-versus-race strategy and upgrade economy is solvable
Death Rally
Spending winnings on the right upgrades drives 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.