Building comparison
head to head
GnogvsPortal 2
Neither is simply harder - they are hard in different places. Gnog demands more variance; Portal 2 demands more optimization.
Gnog
Optimization · Pure Optimization
A tactile toy-box puzzler testing playful experimentation with hidden mechanisms.
Portal 2
Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Gnog leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
GnogPortal 2
Axis by axis
Execution1 vs 3
Portal 2 leans clearly harder on execution.
Gnog
Poking and spinning toy heads requires no dexterity
Portal 2
Portal placement requires some precision but timing is lenient.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gnog
The toys are charming clockwork, not minds
Portal 2
No opponent; puzzles are static.
Variance2 vs 0
Gnog leans clearly harder on variance.
Gnog
Each head's mechanisms are unknown until fiddled with
Portal 2
Puzzles are deterministic with no randomness.
Optimization5 vs 9
Portal 2 leans clearly harder on optimization.
Gnog
Discovering each contraption's interaction sequence is the puzzle
Portal 2
Solving the puzzle's logic IS the entire game.
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.