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 meditative climbing adventure ascending a vast dried-out seaside tower.

Optimization · Pure Optimization
A management game about ferrying spirits to the afterlife.
Jusant leans Optimization (Practiced Mastery); Spiritfarer leans Optimization (Pure Optimization).
Jusant leans a little harder on execution, though the gap is small.
Jusant
Deliberate trigger-grip climbing, stamina not twitch
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.
Jusant
No opposition on the tower
Spiritfarer
Spirits follow scripted arcs.
Spiritfarer leans a little harder on variance, though the gap is small.
Jusant
Routes are fixed and readable
Spiritfarer
Minor resource RNG.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Jusant
Reading the wall and planning pitons is the game
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.