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

Optimization · Pure Optimization
Medieval city-builder with light tactical battles; optimization first.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Manor Lords leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Manor Lords
light battle micro
Portal
Portal placement timing modest.
Manor Lords leans a little harder on reads, though the gap is small.
Manor Lords
scripted bandit/AI raids
Portal
No adversary modeling player.
Manor Lords leans clearly harder on variance.
Manor Lords
seasons, fertility, raids timing
Portal
Deterministic chambers; no randomness.
Manor Lords leans a little harder on optimization, though the gap is small.
Manor Lords
burgage plots and supply chains central
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.