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
Strategic dismemberment under resource pressure, solved by upgrade planning and practiced limb-aiming.

Execution · Practiced Mastery
An action-survival loop driven by practiced crowd-control shooting and weapon-upgrade optimisation.
Dead Space (2008) leans Execution (Practiced Mastery); Resident Evil 4 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.
Dead Space (2008)
Precise limb-targeting under Necromorph pressure is the core skill
Resident Evil 4
Crowd management requires precise, fast shooting under constant pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Space (2008)
Necromorphs follow fixed approach patterns, not player modelling
Resident Evil 4
Ganados follow scripted group patterns, not player modelling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Space (2008)
Store stock is deterministic; minor drop variance on kills
Resident Evil 4
Minor drop RNG from enemies but encounters are fixed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Space (2008)
Weapon upgrading, power-node routing and stasis timing are optimisable
Resident Evil 4
Weapon upgrading, positioning and merchant economy are solvable
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.