head to head
Muse Dash asks more than Half-Life 2, and the gap is execution.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
Cute two-button rhythm game where everything reduces to hitting notes on beat.
Half-Life 2 leans Execution (Pure Mechanics); Muse Dash leans Execution (Pure Mechanics).
Muse Dash leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Muse Dash
Two-lane rhythm hits at high BPM are pure hands
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Muse Dash
Charts never adapt
Half-Life 2 leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Muse Dash
Fully deterministic note charts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Linear progression with no builds.
Muse Dash
Character buffs and chart memorization help margins
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.