head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
A rhythm racer that turns any music file into a reflex puzzle track.

Execution · Pure Mechanics
A VR rail shooter testing aim and memorised spawn positions for score.
Audiosurf leans Execution (Pure Mechanics); Until Dawn: Rush of Blood 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.
Audiosurf
Lane-switching to the beat tests reaction speed.
Until Dawn: Rush of Blood
Dual-wield aim under rollercoaster speed is the whole test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Audiosurf
No opponent.
Until Dawn: Rush of Blood
Monsters pop from scripted positions, never adapting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Audiosurf
Track generated from song, then fixed.
Until Dawn: Rush of Blood
Branching track paths hide targets until ridden
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Audiosurf
Block-matching color strategy learnable per song.
Until Dawn: Rush of Blood
Memorising spawn positions drives leaderboard scores
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.