head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Variance · Pure Chaos
The fan-favourite sequel where costumes and better boards still bow to the dice.

Variance · Pure Chaos
The shrunken handheld party where touchscreen minigames feed the usual dice-driven chaos.
Mario Party 2 leans Variance (Pure Chaos); 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.
Mario Party 2
Minigame reflexes earn coins between turns.
Mario Party DS
Touch and mic minigames test handheld dexterity.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Party 2
Item plays invite light opponent prediction.
Mario Party DS
Hex placement lightly targets rivals.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Party 2
Dice, items and bonus stars dominate outcomes.
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.
Mario Party 2
Board routing and item economy are shallow but real.
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.