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 wave-defense RTS testing economic and defensive optimization against scripted hordes.

Optimization · Pure Optimization
Deadline-driven strategy where three explorers split duties harvesting fruit with Pikmin squads.
Diplomacy is Not an Option 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.
Diplomacy is Not an Option
Fast unit micro helps but isn't the ceiling
Pikmin 3
Juggling three captains needs deft control
Diplomacy is Not an Option leans a little harder on reads, though the gap is small.
Diplomacy is Not an Option
Enemy hordes follow scripted waves, not adapting
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.
Diplomacy is Not an Option
Some map and event variation, mostly fixed
Pikmin 3
Fruit and enemy placements are static
Diplomacy is Not an Option leans a little harder on optimization, though the gap is small.
Diplomacy is Not an Option
Economy, defenses and army composition against scaling waves
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.