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.

Execution · Competitive PvP
A Crash Bandicoot party collection of competitive arena minigames for up to four players.

Execution · Competitive PvP
Party baseball testing swing timing and pitch-guessing against friends under item chaos.
Crash Bash leans Execution (Competitive PvP); Mario Super Sluggers leans Execution (Competitive PvP).
Crash Bash leans a little harder on execution, though the gap is small.
Crash Bash
Minigame timing, mashing, and dodging decide most rounds
Mario Super Sluggers
Swing timing and fielding reactions decide most plays
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Bash
Human rivals in versus minigames can be baited
Mario Super Sluggers
Pitcher-batter guessing games against humans reward prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Bash
Item drops and arena randomness swing rounds
Mario Super Sluggers
Star powers and item errors inject party chaos
Mario Super Sluggers leans a little harder on optimization, though the gap is small.
Crash Bash
Light minigame strategies, quickly learned
Mario Super Sluggers
Team chemistry and lineup building are shallow but real
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.