head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A co-op action-adventure where two players must synchronise execution and planning to break out and stay free.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
A Way Out leans Execution (Practiced Mastery); Grand Theft Auto V 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.
A Way Out
Timed escapes and combat require responsive, accurate inputs
Grand Theft Auto V
Driving and shooting demand decent inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
A Way Out
Co-op partner coordination requires some social prediction
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
A Way Out
Enemy patrols have scripted paths with some unpredictability
Grand Theft Auto V
Some mission and lobby randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
A Way Out
Escape routes and combat approaches have learnable optimal lines
Grand Theft Auto V
Heists, money loops, builds 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.