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

Variance · Systems & Chaos
A gothic exploration roguelike about sailing an underground ocean, trading terror for stories and profit.

Variance · Systems & Chaos
Excavating a town's hidden history through unguided, methodical deduction.
Sunless Sea leans Variance (Systems & Chaos); The Painscreek Killings 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.
Sunless Sea
Slow boat combat barely tests the hands
The Painscreek Killings
Walking and photographing, nothing physical
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sunless Sea
Horrors are scripted or random, never adaptive
The Painscreek Killings
An empty town - no one to outwit
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sunless Sea
Hidden map, random events and unknown story branches dominate
The Painscreek Killings
The entire mystery is hidden information to excavate
Sunless Sea leans a little harder on optimization, though the gap is small.
Sunless Sea
Trade routes and fuel math converge once mapped
The Painscreek Killings
Cross-referencing keys, dates and letters is methodical deduction
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.