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 · Pure Mechanics
Harder, longer-sightline sequel demanding even cleaner execution per floor.

Execution · Practiced Mastery
A 3D platformer about precise gravity-bending jumps through fixed galaxies.
Hotline Miami 2: Wrong Number leans Execution (Pure Mechanics); Super Mario Galaxy 2 leans Execution (Practiced Mastery).
Hotline Miami 2: Wrong Number leans a little harder on execution, though the gap is small.
Hotline Miami 2: Wrong Number
Long sightlines punish any aim or timing slip
Super Mario Galaxy 2
Precise jumps and gravity navigation define every galaxy
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hotline Miami 2: Wrong Number
No adaptive opposition, just scripted aggression
Super Mario Galaxy 2
Bosses are scripted patterns, not adapting to you
Hotline Miami 2: Wrong Number leans a little harder on variance, though the gap is small.
Hotline Miami 2: Wrong Number
Enemy wander adds restart-to-restart noise
Super Mario Galaxy 2
Levels are deterministic, nothing random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hotline Miami 2: Wrong Number
Stricter routing through bigger open levels
Super Mario Galaxy 2
Learning fixed layouts and routes for stars
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.