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

Optimization · Practiced Mastery
An action RPG where loot-driven builds and puzzle-laden dungeons take priority over reflexes.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.
Darksiders II: Deathinitive Edition leans Optimization (Practiced Mastery); Red Dead Redemption 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.
Darksiders II: Deathinitive Edition
combo timing and platforming precision
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
Red Dead Redemption leans a little harder on reads, though the gap is small.
Darksiders II: Deathinitive Edition
bosses are fixed scripted patterns
Red Dead Redemption
Multiplayer skirmishes add light human prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders II: Deathinitive Edition
loot drops are randomized
Red Dead Redemption
Ambient events and spawns vary mildly
Darksiders II: Deathinitive Edition leans a little harder on optimization, though the gap is small.
Darksiders II: Deathinitive Edition
loot builds and puzzle routes solvable
Red Dead Redemption
Mission approaches and economy are learnable
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.