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.

Execution · Practiced Mastery
A dark side-scrolling puzzle-platformer about a fleeing boy.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.
Inside leans Execution (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.
Inside
Precise platforming and timing.
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.
Inside
Enemies follow scripts.
Red Dead Redemption
Multiplayer skirmishes add light human prediction
Red Dead Redemption leans a little harder on variance, though the gap is small.
Inside
No randomness.
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.
Inside
Puzzles have fixed solutions.
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.