head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Optimization · Pure Optimization
Hoenn's definitive version, crowned by the strategy-heavy Battle Frontier.

Optimization · Pure Optimization
Mobile production-chain and layout optimisation paced by timers.
Pokémon Emerald leans Optimization (Pure Optimization); SimCity BuildIt leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Emerald
Turn-based commands only
SimCity BuildIt
Tapping menus has no skill floor
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Emerald
Battle Frontier AI is fixed-policy
SimCity BuildIt
No adversary; trade is asynchronous
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Emerald
Encounter RNG and Frontier hax
SimCity BuildIt
Market prices and material drops add mild randomness
Pokémon Emerald leans a little harder on optimization, though the gap is small.
Pokémon Emerald
EVs, movesets, and Frontier strategy run deep
SimCity BuildIt
Production chains, layout and currency timing are the whole 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.