head to head
Portal 2 asks more than Trine 2, and the gap is optimization.

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

Optimization · Pure Optimization
Gorgeous co-op puzzle-platforming where the cleverest contraption wins, not the fastest fingers.
Portal 2 leans Optimization (Pure Optimization); Trine 2 leans Optimization (Pure Optimization).
Trine 2 leans a little harder on execution, though the gap is small.
Portal 2
Portal placement requires some precision but timing is lenient.
Trine 2
Rope swings and box physics demand moderate dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
No opponent; puzzles are static.
Trine 2
Static puzzles, no adaptive opposition
Trine 2 leans a little harder on variance, though the gap is small.
Portal 2
Puzzles are deterministic with no randomness.
Trine 2
Everything is visible and deterministic
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Trine 2
Hero-swap puzzle solving is the central test
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.