head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
Open-world Pokémon where you tackle gyms and titans in any order.

Optimization · Pure Optimization
A farm-life sim solved by season routing and profit optimization.
Pokémon Scarlet leans Optimization (Pure Optimization); Stardew Valley 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.
Pokémon Scarlet
Open-world traversal, battles stay menu-based
Stardew Valley
Trivial timing on fishing and combat
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Scarlet
NPC trainers never adapt
Stardew Valley
No adaptive opponent exists
Stardew Valley leans a little harder on variance, though the gap is small.
Pokémon Scarlet
Open-world spawns and tera raids
Stardew Valley
Crop luck and geode RNG matter modestly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Scarlet
Terastallize typing adds a planning layer
Stardew Valley
Routing seasons, profit loops, and bundles dominates
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.