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

Optimization · Pure Optimization
An open-world murder investigation where collecting and weighing evidence determines an accusation with no single right answer.
Fallout leans Optimization (Pure Optimization); Paradise Killer 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.
Fallout
Turn-based, no dexterity
Paradise Killer
Exploration is open-world walking with no combat demand
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
Paradise Killer
Suspects follow scripted arcs; no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout
To-hit rolls and random encounters
Paradise Killer
Evidence distribution across the island creates hidden-information 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
Paradise Killer
Assembling sufficient evidence per suspect and choosing who to charge is a deductive optimisation
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.