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 · Practiced Mastery
A strategy shooter testing defense placement economy backed by active gunplay.

Optimization · Pure Optimization
On-rails photography game about provoking and capturing the perfect Pokémon shot.
Fortified leans Optimization (Practiced Mastery); Pokémon Snap leans Optimization (Pure Optimization).
Fortified leans a little harder on execution, though the gap is small.
Fortified
Third-person shooting between waves keeps hands busy
Pokémon Snap
Timing photos on a moving rail
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fortified
Martian waves are scripted compositions
Pokémon Snap
Creature behavior is fully scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fortified
Wave makeup is known after a single attempt
Pokémon Snap
Minor behavioral wiggle per run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fortified
Defense placement and hero loadout economy decide rounds
Pokémon Snap
Triggering rare poses is route knowledge
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.