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

Execution · Pure Mechanics
The Guitar Hero entry that added drums and vocals to chase full-band play.

Execution · Pure Mechanics
Nintendo's quirky GBA rhythm collection where perfect timing on absurd minigames is everything.
Guitar Hero: World Tour leans Execution (Pure Mechanics); Rhythm Tengoku 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.
Guitar Hero: World Tour
Fret-and-strum accuracy on expert note charts
Rhythm Tengoku
Frame-tight timing taps are the entire test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guitar Hero: World Tour
Charts never adapt
Rhythm Tengoku
No opponent of any kind
Rhythm Tengoku leans a little harder on variance, though the gap is small.
Guitar Hero: World Tour
Deterministic charts
Rhythm Tengoku
Cues are fully scripted and visible
Guitar Hero: World Tour leans a little harder on optimization, though the gap is small.
Guitar Hero: World Tour
Star power activation paths drive top scores
Rhythm Tengoku
Learning each minigame's quirky cue patterns
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.