head to head
Neither is simply harder - they are hard in different places. Portal 2 demands more optimization; Wartile demands more variance.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.

Optimization · Pure Optimization
A real-time tabletop tactics game testing positioning and cooldown management.
Portal 2 leans Optimization (Pure Optimization); Wartile 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.
Portal 2
Portal placement requires some precision but timing is lenient.
Wartile
Real-time cooldown timing adds light dexterity demand
Wartile leans clearly harder on reads.
Portal 2
No opponent; puzzles are static.
Wartile
AI enemies are scripted; no adaptive opponent to read
Wartile leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
Wartile
Card draws and combat rolls inject randomness
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Wartile
Positioning figurines and timing ability cooldowns is the core
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.