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 · Pure Optimization
The original post-apocalyptic CRPG where character builds solve the wasteland.

Optimization · Pure Optimization
A time-loop Roman mystery where deducing each citizen's secret motive unlocks a nonviolent resolution.
Fallout leans Optimization (Pure Optimization); The Forgotten City leans Optimization (Pure Optimization).
The Forgotten City leans a little harder on execution, though the gap is small.
Fallout
Turn-based, no dexterity
The Forgotten City
Combat is technically possible but almost never the optimal path
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout
No adaptive opposition
The Forgotten City
Roman citizens follow scripted roles within the time-loop logic
Fallout leans a little harder on variance, though the gap is small.
Fallout
To-hit rolls and random encounters
The Forgotten City
Hidden motivations and loop-dependent states create investigative uncertainty
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout
SPECIAL builds and quest routing are deeply solvable
The Forgotten City
Identifying the correct non-violent resolution path for each citizen is a solvable 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.