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

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

Optimization · Pure Optimization
Large-scale RTS famous for strategic zoom, thousand-unit armies, and a streaming mass-energy economy.
Impossible Creatures leans Optimization (Pure Optimization); Supreme Commander leans Optimization (Pure Optimization).
Supreme Commander leans a little harder on execution, though the gap is small.
Impossible Creatures
Standard RTS micro and army control
Supreme Commander
Massive APM demands across strategic-zoom battlefields
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
Supreme Commander
PvP hinges on scouting and countering opponent commitments
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Impossible Creatures
Scouting hidden enemy combinations
Supreme Commander
Deterministic engine; only unscouted intel
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Impossible Creatures
Creature-combining army design is deeply solvable
Supreme Commander
Streaming economy and build-order efficiency are the backbone
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.