head to head
Portal 2 asks more than Storyteller, and the gap is execution.

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

Optimization · Pure Optimization
A comic-panel puzzle game where you arrange characters and events to produce a specified story outcome.
Portal 2 leans Optimization (Pure Optimization); Storyteller leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Portal 2
Portal placement requires some precision but timing is lenient.
Storyteller
Dragging characters into comic panels needs no 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.
Storyteller
No opponent; narrative puzzle arrangement
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
Puzzles are deterministic with no randomness.
Storyteller
Story logic is deterministic
Portal 2 leans a little harder on optimization, though the gap is small.
Portal 2
Solving the puzzle's logic IS the entire game.
Storyteller
Arranging characters and props into the exact causal sequence that satisfies each title
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.