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 · Systems & Chaos
Tests park economy management and team building under card-pack RNG.

Optimization · Pure Optimization
Building a team and exploiting type-matchup math against scripted trainers.
Jurassic World: The Game leans Optimization (Systems & Chaos); Pokémon LeafGreen Version leans Optimization (Pure Optimization).
Jurassic World: The Game leans a little harder on execution, though the gap is small.
Jurassic World: The Game
Timed taps in battles add a thin reflex layer
Pokémon LeafGreen Version
Menu-driven turn battles demand no physical skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Jurassic World: The Game
Battle rock-paper-scissors vs AI is mostly pattern, barely predictive
Pokémon LeafGreen Version
Trainers are scripted; link battles are a side mode
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Jurassic World: The Game
Card packs gate dinosaur acquisition behind RNG
Pokémon LeafGreen Version
Wild encounters, catch rolls and crits add mappable RNG
Pokémon LeafGreen Version leans a little harder on optimization, though the gap is small.
Jurassic World: The Game
Park economy and team composition are the real system
Pokémon LeafGreen Version
Type matchups and team building are the solvable core
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.