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.

Execution · Practiced Mastery
A monochrome puzzle-platformer about a boy lost in limbo.

Execution · Practiced Mastery
An open-world superhero brawler where Spider-Man swaps suits mid-combo during a symbiote invasion of Manhattan.
Limbo leans Execution (Practiced Mastery); Spider-Man: Web of Shadows leans Execution (Practiced Mastery).
Spider-Man: Web of Shadows leans a little harder on execution, though the gap is small.
Limbo
Tight platforming with trial-and-error.
Spider-Man: Web of Shadows
Air combos and web-strike chains reward fast hands
Spider-Man: Web of Shadows leans a little harder on reads, though the gap is small.
Limbo
Hazards are scripted.
Spider-Man: Web of Shadows
Symbiote hordes attack on fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Limbo
No randomness.
Spider-Man: Web of Shadows
City events are predictable filler
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Limbo
Puzzles have fixed solutions.
Spider-Man: Web of Shadows
Red-versus-black suit choice and upgrade paths are solvable
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.