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
First-person horror thriller built on brutal improvised-weapon melee.

Execution · Twitch Chaos
An endless runner about sprinting down a hospital corridor full of zombies.
Condemned: Criminal Origins leans Execution (Practiced Mastery); Corridor Z leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Condemned: Criminal Origins
Visceral melee blocking and counter timing
Corridor Z
reaction timing to avoid zombie hazards
Condemned: Criminal Origins leans a little harder on reads, though the gap is small.
Condemned: Criminal Origins
Enemies ambush but follow simple scripts
Corridor Z
no opponent, scripted zombie AI
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Condemned: Criminal Origins
Unpredictable ambushes on a first playthrough
Corridor Z
random hazard and item placement
Condemned: Criminal Origins leans a little harder on optimization, though the gap is small.
Condemned: Criminal Origins
Weapon choice and level knowledge converge
Corridor Z
minor upgrade and route strategy
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.