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
Turn-based RPG whose reactive parry timing layers execution onto build optimization.

Optimization · Practiced Mastery
Memorising and rapidly inputting spell recipes while dodging your own friends.
Clair Obscur: Expedition 33 leans Optimization (Practiced Mastery); Magicka 2 leans Optimization (Practiced Mastery).
Clair Obscur: Expedition 33 leans a little harder on execution, though the gap is small.
Clair Obscur: Expedition 33
Parry and dodge timing inside turn-based combat
Magicka 2
Typing element combos quickly mid-fight is the skill ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Clair Obscur: Expedition 33
Bosses follow learnable scripted patterns
Magicka 2
Enemies are scripted; friendly-fire chaos is not prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Clair Obscur: Expedition 33
Some unknown attack strings on first encounter
Magicka 2
Co-op misfires add slapstick randomness, little else
Clair Obscur: Expedition 33 leans a little harder on optimization, though the gap is small.
Clair Obscur: Expedition 33
Pictos, builds, and turn economy are solvable
Magicka 2
Knowing the strongest spell recipes trivialises encounters
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.