head to head
Neither is simply harder - they are hard in different places. Portal demands more execution; Warhammer 40,000: Gladius - Relics of War demands more variance.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
Racing to secure relics and optimize unit upgrade chains in a hostile hex-grid wargame.
Portal leans Optimization (Pure Optimization); Warhammer 40,000: Gladius - Relics of War leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
Warhammer 40,000: Gladius - Relics of War
Hex turn-based; no physical precision ceiling
Warhammer 40,000: Gladius - Relics of War leans clearly harder on reads.
Portal
No adversary modeling player.
Warhammer 40,000: Gladius - Relics of War
AI factions follow fixed expansion doctrines without adaptive modelling
Warhammer 40,000: Gladius - Relics of War leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
Warhammer 40,000: Gladius - Relics of War
Random relic placement and event spawns add meaningful hidden unknowns
Warhammer 40,000: Gladius - Relics of War leans a little harder on optimization, though the gap is small.
Portal
Pure puzzle-solving optimization.
Warhammer 40,000: Gladius - Relics of War
Unit upgrade routing and resource building sequencing are deeply 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.