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 turn-based tactical RPG about army building from a demon's perspective.

Optimization · Pure Optimization
A surreal point-and-click puzzle game tracing a family's dark history across generations.
King's Bounty: Dark Side leans Optimization (Pure Optimization); Rusty Lake: Roots 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.
King's Bounty: Dark Side
turn-based, no manual execution needed
Rusty Lake: Roots
Clicking hotspots; occasional timing, nothing demanding.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
King's Bounty: Dark Side
scripted AI armies, no true adaptation
Rusty Lake: Roots
Scripted surreal events, never adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
King's Bounty: Dark Side
combat rolls and loot randomness
Rusty Lake: Roots
Obtuse hidden logic is unknown until discovered; fully convergent.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
King's Bounty: Dark Side
army composition and spell-build depth
Rusty Lake: Roots
Cracking fixed item-and-clue chains drives every scene.
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.