head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Pure Mechanics
Cute two-button rhythm game where everything reduces to hitting notes on beat.

Execution · Pure Mechanics
DS stylus rhythm game where a male cheer squad saves lives through perfectly timed taps.
Muse Dash leans Execution (Pure Mechanics); Osu! Tatakae! Ouendan leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Muse Dash
Two-lane rhythm hits at high BPM are pure hands
Osu! Tatakae! Ouendan
Stylus tap, drag, and spin precision at high tempo
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Muse Dash
Charts never adapt
Osu! Tatakae! Ouendan
Charts never adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Muse Dash
Fully deterministic note charts
Osu! Tatakae! Ouendan
Fully fixed note placements
Muse Dash leans a little harder on optimization, though the gap is small.
Muse Dash
Character buffs and chart memorization help margins
Osu! Tatakae! Ouendan
Memorizing layouts matters less than stylus accuracy
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.