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.

Execution · Twitch Chaos
A kart racer testing drift execution under item-roll variance.

Execution · Practiced Mastery
Tests arcade sports timing in a licensed fantasy sport with swingy Snitch catches.
Chocobo Racing leans Execution (Twitch Chaos); Harry Potter: Quidditch World Cup leans Execution (Practiced Mastery).
Chocobo Racing leans a little harder on execution, though the gap is small.
Chocobo Racing
Drift timing and item dodges decide close finishes
Harry Potter: Quidditch World Cup
Timing passes, tackles and Snitch chases needs moderate dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Chocobo Racing
Two-player races add light human prediction
Harry Potter: Quidditch World Cup
Versus a friend, faking plays adds light prediction
Chocobo Racing leans a little harder on variance, though the gap is small.
Chocobo Racing
Item rolls swing race outcomes kart-style
Harry Potter: Quidditch World Cup
Snitch appearances and combo opportunities add swing
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Chocobo Racing
Ability picks and track shortcuts reward study
Harry Potter: Quidditch World Cup
Special move charging and team choice reward system knowledge
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.