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
A cinematic open-world western leaning on shooting feel and atmosphere.

Execution · Practiced Mastery
Wrangling high-speed 3D movement through fixed stages and boss scripts.
Red Dead Redemption 2 leans Execution (Practiced Mastery); Sonic Adventure DX: Director's Cut leans Execution (Practiced Mastery).
Sonic Adventure DX: Director's Cut leans a little harder on execution, though the gap is small.
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Sonic Adventure DX: Director's Cut
High-speed 3D control and jank-wrangling demand real hands
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Sonic Adventure DX: Director's Cut
Chaos bosses run fixed phase scripts
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Sonic Adventure DX: Director's Cut
Stage layouts and upgrades never change
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
Sonic Adventure DX: Director's Cut
Speedrun routing and A-rank paths are learnable systems
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.