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

Optimization · Practiced Mastery
Open-world kung-fu action RPG starring a customizable mutant rodent in a toxic wasteland.

Optimization · Practiced Mastery
A slow dungeon crawl testing build planning and labyrinth knowledge over twitch skill.
Biomutant leans Optimization (Practiced Mastery); Lunacid leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Biomutant
Kung-fu combos and gunplay timing
Lunacid
First-person melee timing matters but stays deliberate
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Biomutant
Creatures follow scripted behaviors
Lunacid
Dungeon denizens follow fixed King's Field-style patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Biomutant
Random loot and mutation drops
Lunacid
Labyrinth secrets are unknown until uncovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Biomutant
Build crafting across mutations, gear, and classes
Lunacid
Build stats, spell hunting and route knowledge dominate
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.