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
A strategy game about damming a fluid enemy with an optimized energy economy.

Optimization · Pure Optimization
The genre-defining cartoon tower defense with crunchy upgrades and fixed waves begging for perfect solutions.
Creeper World 4 leans Optimization (Pure Optimization); Kingdom Rush 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.
Creeper World 4
Light real-time micro placing and moving units
Kingdom Rush
Light micro of hero and rally points
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Creeper World 4
The creep flows by fixed simulation rules
Kingdom Rush
Wave compositions are fixed and previewable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Creeper World 4
Fluid behaviour is deterministic once terrain is understood
Kingdom Rush
Almost fully deterministic waves
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Creeper World 4
Energy economy and frontline routing decide everything
Kingdom Rush
Tower placement and upgrade routes are solvable
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.