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.

Optimization · Practiced Mastery
The reboot that turned Assassin's Creed into a loot-driven action RPG.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.
Assassin's Creed Origins leans Optimization (Practiced Mastery); Red Dead Redemption leans Execution (Practiced Mastery).
Red Dead Redemption leans a little harder on execution, though the gap is small.
Assassin's Creed Origins
Hitbox-based combat needs timing but lenient.
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Origins
Guard AI scripted, predictable.
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.
Assassin's Creed Origins
Loot rarity rolls present.
Red Dead Redemption
Ambient events and spawns vary mildly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Origins
Gear, abilities, target loadouts 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.