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
A gentle Hogwarts exploration checklist with minimal skill demands anywhere.

Optimization · Practiced Mastery
A cinematic sci-fi side-scroller about a family fleeing alien invasion through quiet environmental puzzles.
Harry Potter and the Order of the Phoenix leans Optimization (Practiced Mastery); Somerville 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.
Harry Potter and the Order of the Phoenix
Spell-casting gestures are deliberately easy
Somerville
Light chase sequences need basic timing.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Order of the Phoenix
Scripted students and Umbridge plots, no adaptive foe
Somerville
Alien threats are scripted set pieces.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Order of the Phoenix
Hogwarts is fixed; discovery is one-time
Somerville
Fixed authored world; minimal hidden state.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Order of the Phoenix
Navigating the castle and task checklist is the game
Somerville
Environmental light-matter puzzles with intended solutions.
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.