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
A genre-hopping adventure that evolves through gaming history as you play.

Optimization · Pure Optimization
Card-economy management and fixed puzzle solutions with light timing inputs.
Evoland leans Optimization (Pure Optimization); Paper Mario: Color Splash 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.
Evoland
Light Zelda-style action sections
Paper Mario: Color Splash
Timed action commands add a light input layer
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Evoland
No adaptive opponent
Paper Mario: Color Splash
Enemies behave on fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Evoland
Some random encounters in RPG segments
Paper Mario: Color Splash
Required Thing cards are unknown until discovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Evoland
Short, fully mappable progression gimmick
Paper Mario: Color Splash
Card economy, paint management and puzzle solutions are the core
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.