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
Rhythm game where clicking circles to the beat becomes an athletic discipline.

Execution · Pure Mechanics
A PC rhythm game where matching colors on a spinning wheel turns charts into analog choreography.
osu! leans Execution (Pure Mechanics); Spin Rhythm XD leans Execution (Pure Mechanics).
osu! leans a little harder on execution, though the gap is small.
osu!
Pixel-perfect cursor aim and tapping at extreme speeds
Spin Rhythm XD
Wheel-spinning, flicks, and taps demand analog precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
osu!
No opponent interaction in scoring
Spin Rhythm XD
Charts never adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
osu!
Beatmaps are fully deterministic
Spin Rhythm XD
Deterministic charts
Spin Rhythm XD leans a little harder on optimization, though the gap is small.
osu!
Mod choices and map selection for ranking
Spin Rhythm XD
Chart study and controller technique choices
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.