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
A fantasy RTS-RPG hybrid solved through army composition and tactical planning.
Clash of Clans leans Optimization (Pure Optimization); King Arthur II: The Role-Playing Wargame leans Optimization (Pure Optimization).
King Arthur II: The Role-Playing Wargame leans a little harder on execution, though the gap is small.
Clash of Clans
Troop drop placement is forgiving
King Arthur II: The Role-Playing Wargame
Real-time battles need control but never twitch precision
Clash of Clans leans a little harder on reads, though the gap is small.
Clash of Clans
Base layouts anticipate human attackers' habits
King Arthur II: The Role-Playing Wargame
Scripted campaign foes don't adapt to your habits
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
King Arthur II: The Role-Playing Wargame
Battle rolls and morale add bounded randomness
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
King Arthur II: The Role-Playing Wargame
Army composition, hero builds and battle planning decide wins
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.