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

Optimization · Pure Optimization
An open-world action RPG blending clunky combat timing with long-haul character and faction planning.

Optimization · Pure Optimization
Survival horror testing inventory routing and ammo economy through a fixed mansion of scripts.
Gothic 3 leans Optimization (Pure Optimization); Resident Evil Code: Veronica X leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Gothic 3
Real-time melee timing and kiting matter.
Resident Evil Code: Veronica X
Tank controls and aimed shots under pressure need composure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gothic 3
Wildlife and orcs follow fixed AI.
Resident Evil Code: Veronica X
Zombies and bosses follow fixed scripted behaviour
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gothic 3
Unknown world content on first run.
Resident Evil Code: Veronica X
Item placements are scripted-but-unknown on first runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gothic 3
Learning points, faction routes, and gear progression decide power.
Resident Evil Code: Veronica X
Ammo economy, item routing and key puzzles drive everything
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.