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
Acrobatic puzzle-platformer where rewinding time turns every fatal mistake into a do-over.
Assassin's Creed Chronicles: China leans Optimization (Practiced Mastery); Prince of Persia: The Sands of Time 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
Prince of Persia: The Sands of Time
Acrobatic platforming chains need timing; rewind softens failure
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
Prince of Persia: The Sands of Time
Sand creatures attack on fixed cues
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
Prince of Persia: The Sands of Time
Rewind power removes most consequence of surprise
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
Prince of Persia: The Sands of Time
Route reading and dagger resource management solve each room
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.
full breakdown
Assassin's Creed Chronicles: China →
full breakdown
Prince of Persia: The Sands of Time →