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
Space 4X with politics and faction-specific economies.

Optimization · Pure Optimization
Open-world monster collecting where team-building optimization decides everything that matters.
Endless Space 2 leans Optimization (Pure Optimization); Pokémon Violet 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.
Endless Space 2
turn-based
Pokémon Violet
Turn-based menus, traversal needs no precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Endless Space 2
AI scripted, some MP
Pokémon Violet
Only ranked human battles involve predicting switches
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Endless Space 2
system traits, anomalies
Pokémon Violet
Encounters, IVs and catch rolls add managed randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Endless Space 2
economy, ships, populations solvable
Pokémon Violet
Team building and type math dominate every battle
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.