head to head
Neither is simply harder - they are hard in different places. Kingdom Two Crowns demands more variance; Portal demands more execution.

Optimization · Pure Optimization
The co-op evolution of the coin-dropping kingdom builder, now with persistent campaigns across themed settings.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Kingdom Two Crowns leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Kingdom Two Crowns
Riding and coin placement only
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Two Crowns
Greed attacks are systemic, not adaptive
Portal
No adversary modeling player.
Kingdom Two Crowns leans clearly harder on variance.
Kingdom Two Crowns
Procedural islands and mount locations vary
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Two Crowns
Build order and portal-clearing strategy dominate
Portal
Pure puzzle-solving optimization.
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.