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
Grid-based dungeon crawler about riddles, secret buttons, and square-dancing around monsters.

Optimization · Pure Optimization
Deadline-driven strategy where three explorers split duties harvesting fruit with Pikmin squads.
Legend of Grimrock leans Optimization (Pure Optimization); Pikmin 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.
Legend of Grimrock
Real-time grid strafing around slow monsters
Pikmin 3
Juggling three captains needs deft control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Legend of Grimrock
Monsters chase on simple fixed logic
Pikmin 3
Wildlife behavior is fixed
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Legend of Grimrock
Secrets hidden until found, then fixed
Pikmin 3
Fruit and enemy placements are static
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Legend of Grimrock
Party builds, riddles, and pressure-plate puzzles dominate
Pikmin 3
Multi-captain routing and fruit-deadline planning 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.