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 · Practiced Mastery
A relaxed co-op collect-a-thon testing little beyond completionist routing.

Optimization · Pure Optimization
A management game about ferrying spirits to the afterlife.
LEGO Pirates of the Caribbean: The Video Game leans Optimization (Practiced Mastery); Spiritfarer 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.
LEGO Pirates of the Caribbean: The Video Game
Forgiving brawling and platforming for all ages
Spiritfarer
Platforming is light and forgiving.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO Pirates of the Caribbean: The Video Game
Enemies are harmless scripted props
Spiritfarer
Spirits follow scripted arcs.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO Pirates of the Caribbean: The Video Game
Collectible locations are fixed, just initially unknown
Spiritfarer
Minor resource RNG.
Spiritfarer leans a little harder on optimization, though the gap is small.
LEGO Pirates of the Caribbean: The Video Game
Completionist collectible routing is the only real puzzle
Spiritfarer
Boat layout and crafting loops reward planning.
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.