head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Systems & Chaos
An ARPG loot grind about chasing affix rolls to feed a damage-stack build.

Optimization · Systems & Chaos
A bleak survival narrative about a plague engulfing a steppe town.
Diablo IV leans Optimization (Systems & Chaos); Pathologic 2 leans Optimization (Systems & Chaos).
Pathologic 2 leans a little harder on execution, though the gap is small.
Diablo IV
Clicking and dodging are light; gear carries you.
Pathologic 2
Combat is clumsy but matters.
Pathologic 2 leans a little harder on reads, though the gap is small.
Diablo IV
Enemies and bosses are scripted; no adaptive opponent.
Pathologic 2
NPCs are scripted, not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo IV
Loot rolls, affixes, and uniques drive every session.
Pathologic 2
Hunger, infection, and supplies fluctuate.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo IV
Paragon, aspects, and damage buckets are solvable theorycraft.
Pathologic 2
Brutal resource and time scheduling is core.
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.