head to head
Neither is simply harder - they are hard in different places. Portal 2 demands more execution; The Battle of Polytopia demands more reads.

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

Optimization · Pure Optimization
A minimalist mobile-born 4X that compresses empire building into quick competitive matches.
Portal 2 leans Optimization (Pure Optimization); The Battle of Polytopia leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Portal 2
Portal placement requires some precision but timing is lenient.
The Battle of Polytopia
Tap-based turns; no dexterity
The Battle of Polytopia leans clearly harder on reads.
Portal 2
No opponent; puzzles are static.
The Battle of Polytopia
Ranked multiplayer rewards predicting human expansion and timing
The Battle of Polytopia leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
The Battle of Polytopia
Unexplored small maps hide ruins and rivals
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
Solving the puzzle's logic IS the entire game.
The Battle of Polytopia
Tight economy math makes perfect openings near-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.