head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Light / Casual
A point-and-click adventure where inventory puzzle logic is the whole challenge.

Optimization · Pure Optimization
A darker parallel timeline that rewards players who trace the exact decision chain to its true conclusion.
Broken Sword: The Smoking Mirror leans Optimization (Light / Casual); Steins;Gate 0 leans Optimization (Pure Optimization).
Broken Sword: The Smoking Mirror leans a little harder on execution, though the gap is small.
Broken Sword: The Smoking Mirror
no physical skill, point-and-click
Steins;Gate 0
Reading only; no twitch requirement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Broken Sword: The Smoking Mirror
no opponents, puzzle-driven
Steins;Gate 0
No adaptive adversary in any route
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Broken Sword: The Smoking Mirror
no meaningful randomness
Steins;Gate 0
Hidden branch conditions drive which ending is reached
Steins;Gate 0 leans a little harder on optimization, though the gap is small.
Broken Sword: The Smoking Mirror
item puzzle logic is solvable
Steins;Gate 0
Phone and choice routing to reach true ending is a solvable map
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.