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

Optimization · Systems & Chaos
PS1 card battler where you build Digimon decks and out-draw scripted AI opponents across themed arenas.

Optimization · Systems & Chaos
Game Boy adaptation of the Pokémon TCG with deckbuilding and club challenges.
Digimon Digital Card Battle leans Optimization (Systems & Chaos); Pokémon Trading Card Game leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon Digital Card Battle
No physical component
Pokémon Trading Card Game
Card selection has no dexterity element
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon Digital Card Battle
AI opponents follow mappable tendencies, not adaptation
Pokémon Trading Card Game
AI duelists play fixed strategies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon Digital Card Battle
Card draws and hidden opponent hands drive swings
Pokémon Trading Card Game
Draws, coin flips, and prize cards
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon Digital Card Battle
Deck construction against known AI decks is solvable
Pokémon Trading Card Game
Deckbuilding around energy curves is the real game
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.