head to head
Neither is simply harder - they are hard in different places. L.A. Noire demands more execution; Pokémon Trading Card Game demands more variance.

Optimization · Systems & Chaos
1940s detective procedural built around crime scenes and reading scripted interrogation tells.

Optimization · Systems & Chaos
Game Boy adaptation of the Pokémon TCG with deckbuilding and club challenges.
L.A. Noire leans Optimization (Systems & Chaos); Pokémon Trading Card Game leans Optimization (Systems & Chaos).
L.A. Noire leans clearly harder on execution.
L.A. Noire
Light shooting and driving, very forgiving
Pokémon Trading Card Game
Card selection has no dexterity element
Pokémon Trading Card Game leans a little harder on reads, though the gap is small.
L.A. Noire
Suspects follow fixed scripts, never adapt
Pokémon Trading Card Game
AI duelists play fixed strategies
Pokémon Trading Card Game leans clearly harder on variance.
L.A. Noire
Interrogation tells and clues hidden until discovered
Pokémon Trading Card Game
Draws, coin flips, and prize cards
Pokémon Trading Card Game leans clearly harder on optimization.
L.A. Noire
Evidence chains and question choices have fixed correct answers
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.