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

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.

Optimization · Practiced Mastery
Remake of the original Yakuza following Kiryu's return to Kamurocho.
Red Dead Redemption leans Execution (Practiced Mastery); Yakuza Kiwami leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
Yakuza Kiwami
Brawling combos and dodges are forgiving but present.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Redemption
Multiplayer skirmishes add light human prediction
Yakuza Kiwami
Majima ambushes are scripted, not adaptive.
Red Dead Redemption leans a little harder on variance, though the gap is small.
Red Dead Redemption
Ambient events and spawns vary mildly
Yakuza Kiwami
Minor randomness in encounters and minigames.
Yakuza Kiwami leans a little harder on optimization, though the gap is small.
Red Dead Redemption
Mission approaches and economy are learnable
Yakuza Kiwami
Style upgrades, heat moves and gear 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.