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
Base-building strategy game about optimizing upgrade economy and raid compositions.

Optimization · Pure Optimization
The Game Boy Advance remake of the original Kanto journey with modern mechanics and the Sevii Islands.
Clash of Clans leans Optimization (Pure Optimization); Pokemon FireRed Version leans Optimization (Pure Optimization).
Clash of Clans leans a little harder on execution, though the gap is small.
Clash of Clans
Troop drop placement is forgiving
Pokemon FireRed Version
Turn-based menus only
Clash of Clans leans a little harder on reads, though the gap is small.
Clash of Clans
Base layouts anticipate human attackers' habits
Pokemon FireRed Version
AI trainers follow fixed logic; PvP optional
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Clash of Clans
Matchmaking and unseen traps add uncertainty
Pokemon FireRed Version
Wild encounters and catch rolls bring luck
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Clash of Clans
Army comps, upgrade paths, and attack routing
Pokemon FireRed Version
Team composition and matchup knowledge decide everything
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.