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
Nintendo's quirky GBA rhythm collection where perfect timing on absurd minigames is everything.

Execution · Pure Mechanics
The full-band rhythm game whose setlist and feel made it the genre's high-water mark.
Rhythm Tengoku leans Execution (Pure Mechanics); Rock Band 2 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.
Rhythm Tengoku
Frame-tight timing taps are the entire test
Rock Band 2
Guitar, drum, and vocal accuracy on expert charts
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rhythm Tengoku
No opponent of any kind
Rock Band 2
Charts never respond
Rhythm Tengoku leans a little harder on variance, though the gap is small.
Rhythm Tengoku
Cues are fully scripted and visible
Rock Band 2
Fixed setlist charts
Rock Band 2 leans a little harder on optimization, though the gap is small.
Rhythm Tengoku
Learning each minigame's quirky cue patterns
Rock Band 2
Overdrive activation paths decide 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.