head to head
Neither is simply harder - they are hard in different places. Ape Academy 2 demands more reads; Mario Party DS demands more variance.

Reads · Bluff & Deduction
A party card-battler testing rock-paper-scissors prediction and minigame reflexes.

Variance · Pure Chaos
The shrunken handheld party where touchscreen minigames feed the usual dice-driven chaos.
Ape Academy 2 leans Reads (Bluff & Deduction); Mario Party DS leans Variance (Pure Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Academy 2
Minigames need some quick reactions
Mario Party DS
Touch and mic minigames test handheld dexterity.
Ape Academy 2 leans clearly harder on reads.
Ape Academy 2
Rock-paper-scissors card duels reward predicting opponents
Mario Party DS
Hex placement lightly targets rivals.
Mario Party DS leans clearly harder on variance.
Ape Academy 2
Card draws and the RPS layer add chance
Mario Party DS
Dice and hex RNG dominate the tiny boards.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Academy 2
Deck and banana management has shallow strategy
Mario Party DS
Short boards leave little routing depth.
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.