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.

Optimization · Pure Optimization
A post-nuclear RPG expanded in scope where tagged builds and Gifted-trait optimization dominate.

Optimization · Pure Optimization
A Pathfinder system-mastery game where feat optimization and kingdom timeline routing determine survival.
Fallout 2 leans Optimization (Pure Optimization); Pathfinder: Kingmaker 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 2
Turn-based AP system makes twitch entirely irrelevant
Pathfinder: Kingmaker
Real-time-with-pause removes twitch; timed kingdom events add pressure marginally
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout 2
All tribal and Enclave enemies run fixed scripted combat routines
Pathfinder: Kingmaker
All enemies and advisors follow scripted patterns without player modelling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout 2
Hidden special encounters and timed events create significant unknown-information space
Pathfinder: Kingmaker
Hidden ability check thresholds and timed kingdom deadlines create unknowns
Pathfinder: Kingmaker leans a little harder on optimization, though the gap is small.
Fallout 2
SPECIAL and skill tagging with Gifted trait produce well-known dominant build strategies
Pathfinder: Kingmaker
Pathfinder feat chains and kingdom management routing have known optimal solutions
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.