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 tactical RPG testing positioning and turn prediction on a grid battlefield.
Clash of Clans leans Optimization (Pure Optimization); Vandal Hearts II leans Optimization (Pure Optimization).
Vandal Hearts II leans a little harder on execution, though the gap is small.
Clash of Clans
Troop drop placement is forgiving
Vandal Hearts II
Simultaneous-turn combat has no twitch input
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Clash of Clans
Base layouts anticipate human attackers' habits
Vandal Hearts II
Predicting AI move order matters but follows scripts
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
Vandal Hearts II
Hit chances 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
Vandal Hearts II
Unit positioning, builds and the prediction system win battles
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.