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 · Pure Optimization
A persistent multiplayer 4X testing map-control strategy against other human players.

Optimization · Mind & Math
N64 battle sim bringing 3D Pokémon fights and rental-team tournaments to the couch.
Cardania: Epoch Wars leans Optimization (Pure Optimization); Pokémon Stadium leans Optimization (Mind & Math).
Cardania: Epoch Wars leans a little harder on execution, though the gap is small.
Cardania: Epoch Wars
Strategy clicks, no twitch dimension
Pokémon Stadium
Turn-based selection only
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cardania: Epoch Wars
Live human rivals contesting the map can be predicted
Pokémon Stadium
Versus mode against humans rewards prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Cardania: Epoch Wars
Anomalies and shifting maps add hidden information
Pokémon Stadium
Rental rosters and crit rolls swing matches
Cardania: Epoch Wars leans a little harder on optimization, though the gap is small.
Cardania: Epoch Wars
Resource control and faction strategy dominate the metagame
Pokémon Stadium
Type theory and rental drafting are studyable
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.