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

Optimization · Pure Optimization
RTS where you splice animals into custom armies before battle begins.

Optimization · Mind & Math
A siege-war MMORPG defined by clan politics, PvP reads under castle warfare, and deep class optimisation.
Impossible Creatures leans Optimization (Pure Optimization); Lineage 2 leans Optimization (Mind & Math).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Impossible Creatures
Standard RTS micro and army control
Lineage 2
Auto-attack systems limit individual twitch expression
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Impossible Creatures
Human opponents counter your creature picks
Lineage 2
Castle sieges and clan PvP demand reading opponent strategies
Lineage 2 leans a little harder on variance, though the gap is small.
Impossible Creatures
Scouting hidden enemy combinations
Lineage 2
Drop rates and spoil variance are historically brutal
Impossible Creatures leans a little harder on optimization, though the gap is small.
Impossible Creatures
Creature-combining army design is deeply solvable
Lineage 2
Class synergies and party compositions for sieges are well-studied
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.