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.

Execution · Twitch Chaos
An endless runner about sprinting down a hospital corridor full of zombies.

Execution · Practiced Mastery
Co-op FPS about four masked crooks holding out through scripted heist assaults.
Corridor Z leans Execution (Twitch Chaos); Payday: The Heist leans Execution (Practiced Mastery).
Payday: The Heist leans a little harder on execution, though the gap is small.
Corridor Z
reaction timing to avoid zombie hazards
Payday: The Heist
Holding off assault waves takes solid gunplay
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Corridor Z
no opponent, scripted zombie AI
Payday: The Heist
Police waves are scripted spawns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Corridor Z
random hazard and item placement
Payday: The Heist
Drill failures and objective locations shuffle
Payday: The Heist leans a little harder on optimization, though the gap is small.
Corridor Z
minor upgrade and route strategy
Payday: The Heist
Crew positioning and objective sequencing per heist
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.