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 deterministic precision platformer about executing pixel-perfect dash routes.

Execution · Pure Mechanics
The free fan-made Guitar Hero engine where competitive charting and scoring live on.
Celeste leans Execution (Pure Mechanics); Clone Hero leans Execution (Pure Mechanics).
Celeste leans a little harder on execution, though the gap is small.
Celeste
Pixel-perfect dashes and wavedashes are the entire skill.
Clone Hero
Community charts push fretting speed past official games
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Celeste
No opponent; level hazards are fully scripted.
Clone Hero
Charts are static
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Celeste
Zero randomness; every screen is deterministic.
Clone Hero
Fully deterministic
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Celeste
Route choice and tech selection are learnable but light.
Clone Hero
Star power path calculation is a science
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.