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
Neon top-down massacre where each floor is a one-mistake execution puzzle.

Execution · Pure Mechanics
A bullet-hell shmup testing reflex dodging of scripted enemy patterns.
Hotline Miami leans Execution (Practiced Mastery); Raiden IV OverKill leans Execution (Pure Mechanics).
Raiden IV OverKill leans a little harder on execution, though the gap is small.
Hotline Miami
One-hit-death rooms demand flawless fast inputs
Raiden IV OverKill
Dodging dense bullet patterns demands precise reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hotline Miami
Enemies are dumb scripted reactors
Raiden IV OverKill
Enemies fire fixed scripted patterns, not adapting
Raiden IV OverKill leans a little harder on variance, though the gap is small.
Hotline Miami
Slight enemy behavior wobble between restarts
Raiden IV OverKill
Some spawn and item randomness, mostly mappable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hotline Miami
Route planning and mask choice per floor
Raiden IV OverKill
Memorizing patterns and scoring routes maximizes runs
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.