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

Optimization · Practiced Mastery
Retro-styled action RPG mixing fast combat with dense ball-physics puzzles.

Optimization · Practiced Mastery
Comedy RPG where every turn-based attack hides an action-timing minigame.
CrossCode leans Optimization (Practiced Mastery); Mario & Luigi: Superstar Saga leans Optimization (Practiced Mastery).
CrossCode leans a little harder on execution, though the gap is small.
CrossCode
fast ball-throwing combat and dash puzzles
Mario & Luigi: Superstar Saga
Timed hits and dodge jumps every turn
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
CrossCode
no adaptive opponent
Mario & Luigi: Superstar Saga
Bosses telegraph fixed patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
CrossCode
content is fixed and scripted
Mario & Luigi: Superstar Saga
Encounters are authored
CrossCode leans a little harder on optimization, though the gap is small.
CrossCode
element puzzles and builds reward systematic play
Mario & Luigi: Superstar Saga
Bros. Attack mastery and stat builds
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.