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

Execution · Practiced Mastery
Track memorisation and upgrade economy layered under straightforward racing execution.
Carmageddon II: Carpocalypse Now leans Execution (Practiced Mastery); Top Gear 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.
Carmageddon II: Carpocalypse Now
Perfect car control trivialises wrecking AI opponents and surviving
Top Gear 2
Clean cornering and nitro timing decide finishing position
Carmageddon II: Carpocalypse Now leans a little harder on reads, though the gap is small.
Carmageddon II: Carpocalypse Now
AI drivers follow set behaviours, never modelling the player
Top Gear 2
AI racers follow fixed rubber-band behaviour
Carmageddon II: Carpocalypse Now 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
Top Gear 2
Tracks and hazards are identical every championship
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Carmageddon II: Carpocalypse Now
Choosing wreck-versus-race strategy and upgrade economy is solvable
Top Gear 2
Upgrade purchase order and track memorisation compound advantages
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.