head to head
The Witcher: Adventure Game asks more than Pokemon Stadium 2, and the gap is variance.

Optimization · Systems & Chaos
N64 arena battler where rental and imported Pokemon fight in 3D tournaments and mini-games.

Variance · Systems & Chaos
A dice-and-cards board game testing quest routing against heavy draw luck.
Pokemon Stadium 2 leans Optimization (Systems & Chaos); The Witcher: Adventure Game leans Variance (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Pokemon Stadium 2
Menu-driven turn battles; no physical demands
The Witcher: Adventure Game
Digital board game - clicks only
Pokemon Stadium 2 leans a little harder on reads, though the gap is small.
Pokemon Stadium 2
Human PvP cups reward prediction; AI cups are mappable
The Witcher: Adventure Game
Human rivals race and block, but interaction is shallow
The Witcher: Adventure Game leans clearly harder on variance.
Pokemon Stadium 2
Accuracy rolls, crits, rental rosters add randomness
The Witcher: Adventure Game
Dice combat and event card draws dominate single quests
Pokemon Stadium 2 leans a little harder on optimization, though the gap is small.
Pokemon Stadium 2
Team building, movesets, type matchups are solvable
The Witcher: Adventure Game
Quest routing and risk-odds management reward planning
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.