Building comparison
head to head
Guitar Hero IIvsRhythm Heaven Megamix
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Guitar Hero II
Execution · Pure Mechanics
Sequel rhythm game with harder setlists and refined plastic-guitar technique.
Rhythm Heaven Megamix
Execution · Pure Mechanics
Pure rhythmic timing against fixed musical cues, minigame after minigame.
Guitar Hero II leans Execution (Pure Mechanics); Rhythm Heaven Megamix leans Execution (Pure Mechanics).
Guitar Hero IIRhythm Heaven Megamix
Axis by axis
Execution9 vs 8
Guitar Hero II leans a little harder on execution, though the gap is small.
Guitar Hero II
Harder charts, hammer-ons, and three-note chords
Rhythm Heaven Megamix
Beat-perfect input timing is the entire test
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guitar Hero II
Static note highways
Rhythm Heaven Megamix
No opponent - only the music
Variance0 vs 0
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Guitar Hero II
Fully deterministic charts
Rhythm Heaven Megamix
Every minigame plays identically each attempt
Optimization2 vs 2
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Guitar Hero II
Star power pathing for leaderboard play
Rhythm Heaven Megamix
Cues are learned quickly; timing remains the wall
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.