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 tower defense game with offense, sending units while defending your base.
Clash of Clans leans Optimization (Pure Optimization); Defenders of Ardania leans Optimization (Pure Optimization).
Defenders of Ardania leans a little harder on execution, though the gap is small.
Clash of Clans
Troop drop placement is forgiving
Defenders of Ardania
Placing towers and units needs no physical speed
Defenders of Ardania leans a little harder on reads, though the gap is small.
Clash of Clans
Base layouts anticipate human attackers' habits
Defenders of Ardania
Multiplayer attack-defense adds genuine opponent prediction
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
Defenders of Ardania
Spell outcomes and unit waves add some 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
Defenders of Ardania
Tower placement, unit waves and spell timing are solvable
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.