head to head
Neither is simply harder - they are hard in different places. Knights and Merchants: The Shattered Kingdom demands more variance; Portal demands more execution.

Optimization · Pure Optimization
Medieval economy RTS where feeding your army matters more than commanding it.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Knights and Merchants: The Shattered Kingdom leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Knights and Merchants: The Shattered Kingdom
Manual troop formations need some real-time handling.
Portal
Portal placement timing modest.
Knights and Merchants: The Shattered Kingdom leans a little harder on reads, though the gap is small.
Knights and Merchants: The Shattered Kingdom
Campaign AI attacks on fixed triggers and timers.
Portal
No adversary modeling player.
Knights and Merchants: The Shattered Kingdom leans clearly harder on variance.
Knights and Merchants: The Shattered Kingdom
Enemy positions hidden until scouted, little else.
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.
Knights and Merchants: The Shattered Kingdom
Food chains and serf logistics are the dominant solvable layer.
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.