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 · Practiced Mastery
A basic arcade soccer game testing input timing and simple positioning.

Execution · Practiced Mastery
Tests arcade sports timing in a licensed fantasy sport with swingy Snitch catches.
Champions World Class Soccer leans Execution (Practiced Mastery); Harry Potter: Quidditch World Cup leans Execution (Practiced Mastery).
Champions World Class Soccer leans a little harder on execution, though the gap is small.
Champions World Class Soccer
Passing, shooting and tackling timing carry every play
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.
Champions World Class Soccer
Two-player mode lets you predict a human opponent
Harry Potter: Quidditch World Cup
Versus a friend, faking plays adds light prediction
Harry Potter: Quidditch World Cup leans a little harder on variance, though the gap is small.
Champions World Class Soccer
Little randomness once team ratings are known
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.
Champions World Class Soccer
Formation choice and team selection give a known edge
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.