head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Turn-based tactics where movement combos turn battles into solvable puzzles.

Optimization · Pure Optimization
A farm-life sim solved by season routing and profit optimization.
Mario + Rabbids Kingdom Battle 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.
Mario + Rabbids Kingdom Battle
Turn-based; no dexterity gate
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.
Mario + Rabbids Kingdom Battle
Enemy AI follows predictable rules
Stardew Valley
No adaptive opponent exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario + Rabbids Kingdom Battle
Hit chances are mostly deterministic percentages
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.
Mario + Rabbids Kingdom Battle
Movement chains and team-jump routing are puzzle-solvable
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.