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
A melancholy mobile rhythm game built around piano pieces and a wordless fairy tale.

Execution · Pure Mechanics
Pioneering rhythm game where a rapping dog believes his way through button-cue raps.
Deemo leans Execution (Pure Mechanics); PaRappa the Rapper leans Execution (Pure Mechanics).
PaRappa the Rapper leans a little harder on execution, though the gap is small.
Deemo
Piano-style falling notes need clean two-thumb accuracy
PaRappa the Rapper
Hitting button cues on beat is the whole game
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Deemo
Charts are fixed
PaRappa the Rapper
No opponent; teachers follow set lines
PaRappa the Rapper leans a little harder on variance, though the gap is small.
Deemo
No randomness
PaRappa the Rapper
Songs are fixed sequences
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deemo
Memorizing dense piano passages
PaRappa the Rapper
Freestyle scoring quirks for Cool rank
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.