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 · Practiced Mastery
A long Viking RPG carried by exploration and gear progression.

Optimization · Practiced Mastery
Slow-burn revenge adventure built on daily routines, detective legwork, and QTEs in 1986 Yokosuka.
Assassin's Creed Valhalla leans Optimization (Practiced Mastery); Shenmue leans Optimization (Practiced Mastery).
Assassin's Creed Valhalla leans a little harder on execution, though the gap is small.
Assassin's Creed Valhalla
Combat timing matters but forgiving.
Shenmue
QTEs and light brawling demand modest timing
Assassin's Creed Valhalla leans a little harder on reads, though the gap is small.
Assassin's Creed Valhalla
Enemies scripted and predictable.
Shenmue
NPCs run daily scripts; nothing adapts to you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Valhalla
Loot rolls and raid encounters vary mildly.
Shenmue
First playthrough leans on not knowing schedules and clues
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Assassin's Creed Valhalla
Skill tree, gear, raid routing solvable.
Shenmue
Clue order, NPC schedules, and move training are fully mappable
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.