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 · Pure Optimization
The original monster-collecting RPG that built the catch-train-battle loop.

Optimization · Pure Optimization
A farm-life sim solved by season routing and profit optimization.
Pokémon Red leans Optimization (Pure Optimization); Stardew Valley leans Optimization (Pure Optimization).
Stardew Valley leans a little harder on execution, though the gap is small.
Pokémon Red
Turn-based menus
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 Red
Trainer AI is rudimentary and fixed
Stardew Valley
No adaptive opponent exists
Stardew Valley leans a little harder on variance, though the gap is small.
Pokémon Red
Wild encounters and catch rolls
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 Red
Type matchups and team building solve the campaign
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.