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

Execution · Practiced Mastery
Open-world driving that tests car control with a tuning layer underneath.

Execution · Practiced Mastery
Track memorisation and upgrade economy layered under straightforward racing execution.
Forza Horizon leans Execution (Practiced Mastery); Top Gear 2 leans Execution (Practiced Mastery).
Forza Horizon leans a little harder on execution, though the gap is small.
Forza Horizon
Driving skill with assists off carries every event
Top Gear 2
Clean cornering and nitro timing decide finishing position
Forza Horizon leans a little harder on reads, though the gap is small.
Forza Horizon
AI drivatars follow patterns; casual online adds little
Top Gear 2
AI racers follow fixed rubber-band behaviour
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon
The open world is fixed and fully discoverable
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.
Forza Horizon
Car tuning and racing lines reward systematic study
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.