head to head
Forza Motorsport 4 asks more than Red Dead Redemption 2, and the gap is execution.

Execution · Practiced Mastery
A sim racer where driving precision and car tuning both determine lap times.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Forza Motorsport 4 leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Forza Motorsport 4 leans clearly harder on execution.
Forza Motorsport 4
precise braking, throttle, and racing lines
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Motorsport 4
AI drivers don't meaningfully adapt
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
Forza Motorsport 4
minor race incident randomness
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Forza Motorsport 4 leans clearly harder on optimization.
Forza Motorsport 4
car tuning and upgrade optimization
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.