head to head
Portal 2 asks more than Wario Land 3, and the gap is optimization.

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

Optimization · Pure Optimization
An invincible Wario solves transformation puzzles to reclaim treasures inside a cursed music box.
Portal 2 leans Optimization (Pure Optimization); Wario Land 3 leans Optimization (Pure Optimization).
Wario Land 3 leans a little harder on execution, though the gap is small.
Portal 2
Portal placement requires some precision but timing is lenient.
Wario Land 3
Invincible Wario shifts weight off reflexes
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.
Wario Land 3
No adaptive opponents
Wario Land 3 leans a little harder on variance, though the gap is small.
Portal 2
Puzzles are deterministic with no randomness.
Wario Land 3
Treasure effects unknown on first discovery
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Wario Land 3
Transformation puzzles and treasure unlock order are the 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.