head to head
vs
Princess Peach: Showtime!vsThe Simpsons Game
Princess Peach: Showtime! leans Execution (Light / Casual); The Simpsons Game leans Optimization (Practiced Mastery).
Princess Peach: Showtime!The Simpsons Game
Axis by axis
Execution2 vs 3
The Simpsons Game leans harder on execution: Simple platforming and character-power timing
Reads1 vs 0
Princess Peach: Showtime! leans harder on reads: Scripted enemies
Variance1 vs 1
Even - both lean on variance about the same.
Optimization2 vs 4
The Simpsons Game leans harder on optimization: Character-ability puzzles and collectibles are lightly solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.