head to head
Forza Horizon 5 asks more than Red Dead Redemption 2, and the gap is optimization.

Execution · Practiced Mastery
An open-world racer where tuning and racing lines beat the AI field.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Forza Horizon 5 leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Forza Horizon 5 leans clearly harder on execution.
Forza Horizon 5
Racing line, throttle control, and braking timing matter.
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Forza Horizon 5
AI drivivatars follow fixed patterns; no real adaptation.
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon 5
Weather and event roulette add mild randomness.
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Forza Horizon 5 leans clearly harder on optimization.
Forza Horizon 5
Car tuning, build choice, and tire compound solve races.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.