head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Practiced Mastery
Side-scrolling stealth that rewards memorising patrols and executing clean routes.

Optimization · Practiced Mastery
Open-world superagent sandbox about leveling skills and hunting 500 agility orbs.
Assassin's Creed Chronicles: China leans Optimization (Practiced Mastery); Crackdown leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Chronicles: China
Stealth timing and climb precision punish sloppiness
Crackdown
Aim, driving, and rooftop leaping
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Chronicles: China
Guard patrols are fixed memorisable loops
Crackdown
Gangs are static spawn sets
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Chronicles: China
Everything is scripted and visible with study
Crackdown
Fixed world with placed collectibles
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Chronicles: China
Routing perfect-stealth paths through guard patterns is the score game
Crackdown
Skill-orb routing and boss order planning
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.