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
A smash-everything open-world survival game that is really a giant routing and upgrade puzzle.

Optimization · Pure Optimization
A Viking survival game where preparing properly trivialises each biome boss.
Dysmantle 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.
Dysmantle
Dodge-and-whack combat is simple but timing helps.
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.
Dysmantle
Zombie-like enemies follow fixed mappable patterns.
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.
Dysmantle
Handcrafted world; little meaningful randomness.
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.
Dysmantle
Routing the map, tech tree and gear upgrades drive everything.
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.