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

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

Variance · Systems & Chaos
Pausable top-down heist game about improvising infiltrations of procedurally generated spaceships.
Diablo IV leans Optimization (Systems & Chaos); Heat Signature leans Variance (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo IV
Clicking and dodging are light; gear carries you.
Heat Signature
Pause tool removes most dexterity pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo IV
Enemies and bosses are scripted; no adaptive opponent.
Heat Signature
Guards follow simple mappable logic
Heat Signature leans a little harder on variance, though the gap is small.
Diablo IV
Loot rolls, affixes, and uniques drive every session.
Heat Signature
Procedural ships, gear, and mission rolls
Diablo IV leans a little harder on optimization, though the gap is small.
Diablo IV
Paragon, aspects, and damage buckets are solvable theorycraft.
Heat Signature
Gadget combos and improvised plan routing
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.