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
Logistics as gameplay - planning routes and cargo loads across hostile terrain.

Optimization · Pure Optimization
A Viking survival game where preparing properly trivialises each biome boss.
Death Stranding: Director's Cut leans Optimization (Pure Optimization); Valheim 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.
Death Stranding: Director's Cut
Balance management over terrain takes constant light input
Valheim
Block-and-parry timing matters in boss fights.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Death Stranding: Director's Cut
BTs and MULEs follow predictable scripted behaviours
Valheim
Enemies follow scripted AI; no adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Death Stranding: Director's Cut
Timefall and terrain hazards are mappable once seen
Valheim
World seed and biome layout introduce mild randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Death Stranding: Director's Cut
Route planning, load balancing and infrastructure ARE the game
Valheim
Gear progression and base infrastructure define progress.
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.