head to head
Mario & Luigi: BrothershipvsSuper Mario World 2: Yoshi's Island
Mario & Luigi: Brothership leans Optimization (Practiced Mastery); Super Mario World 2: Yoshi's Island leans Execution (Practiced Mastery).
Mario & Luigi: BrothershipSuper Mario World 2: Yoshi's Island
Axis by axis
Execution5 vs 6
Super Mario World 2: Yoshi's Island leans harder on execution: Egg-aiming and flutter jumps for 100 percent scores
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization7 vs 6
Mario & Luigi: Brothership leans harder on optimization: Gear, Bros. Attack selection and battle plugs reward system play
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

