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

Execution · Practiced Mastery
A sim racer where driving precision and car tuning both determine lap times.
Amped 3 leans Execution (Pure Mechanics); Forza Motorsport 4 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.
Amped 3
Trick input timing and landing balance are the core test
Forza Motorsport 4
precise braking, throttle, and racing lines
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Amped 3
Solo riding with no adaptive opponent
Forza Motorsport 4
AI drivers don't meaningfully adapt
Amped 3 leans a little harder on variance, though the gap is small.
Amped 3
Fixed terrain; minor event variation
Forza Motorsport 4
minor race incident randomness
Forza Motorsport 4 leans a little harder on optimization, though the gap is small.
Amped 3
Line choice and trick chaining maximize scores
Forza Motorsport 4
car tuning and upgrade optimization
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.