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
Day-glo traversal shooter where staying on rails and walls keeps your style and survival up.
Limbo leans Execution (Practiced Mastery); Sunset Overdrive leans Execution (Practiced Mastery).
Sunset Overdrive leans a little harder on execution, though the gap is small.
Limbo
Tight platforming with trial-and-error.
Sunset Overdrive
Grind-rail momentum and mid-air shooting reward clean hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Limbo
Hazards are scripted.
Sunset Overdrive
Mutant hordes are pattern-driven, never adaptive
Sunset Overdrive leans a little harder on variance, though the gap is small.
Limbo
No randomness.
Sunset Overdrive
Horde mode spawns mix things up slightly
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.
Sunset Overdrive
Amp builds, traversal lines, and style multipliers 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.