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

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

Optimization · Pure Optimization
A VATS-heavy wasteland RPG won by perk and build optimization.
Evoland leans Optimization (Pure Optimization); Fallout 3 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
Fallout 3
VATS-leaning combat, low aim demand
Fallout 3 leans a little harder on reads, though the gap is small.
Evoland
No adaptive opponent
Fallout 3
Scripted enemies
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
Fallout 3
Loot rolls, SPECIAL checks
Fallout 3 leans a little harder on optimization, though the gap is small.
Evoland
Short, fully mappable progression gimmick
Fallout 3
Perk and build planning carries the run
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.