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 · Pure Mechanics
A snowboarding game testing trick execution and run routing for high scores.

Execution · Pure Mechanics
A rally racer where mastering precise car control against tricky terrain is everything.
Amped 3 leans Execution (Pure Mechanics); Colin McRae: Dirt 2 leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Amped 3
Trick input timing and landing balance are the core test
Colin McRae: Dirt 2
precise rally driving and braking required
Amped 3 leans a little harder on reads, though the gap is small.
Amped 3
Solo riding with no adaptive opponent
Colin McRae: Dirt 2
no adaptive opponents, mostly time trials
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Amped 3
Fixed terrain; minor event variation
Colin McRae: Dirt 2
weather and surface conditions vary
Amped 3 leans a little harder on optimization, though the gap is small.
Amped 3
Line choice and trick chaining maximize scores
Colin McRae: Dirt 2
car tuning and racing lines solvable
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.